Finishing Strong #138: Girls & Boys

Welcome to Finishing Strong ~ a weekly link-up dedicated to families homeschooling middle & high school kids. Each Wednesday, moms just like you share their best tips, encouragement, advice, and more for teaching older kids at home.

Finishing-Strong-500x500I am delighted that families homeschooling middle and high school age students are coming together and finding inspiration in one another. That has been the goal of Finishing Strong since its inception. Thank you!!

Finishing Strong is hosted by me here at EvaVarga along with my friends – Heather from Blog She Wrote, Megan from Education Possible, and Heidi from Starts at Eight.

I know you will find the posts that have been shared with us inspiring! Grab a cup of tea, kick back, and take some time to check out the wonderful posts shared below. What are your favorites?


Girls in STEM

My daughter has been interested in engineering, sciences, and mathematics since she was just a wee little one. I thereby seek out opportunities and experiences to challenge and inspire her to pursue these areas as a possible career.

I’ve shared several tips and activities to encourage girls in STEM. Take a few minutes to browse the materials available here – Encouraging Girls in STEM – as well as learn more about upcoming events.

The annual Introduce a Girl to Engineering Day will be here before you know it (it’s February 22nd) and events are being planned across the nation. In preparation for this annual celebration of Girls in STEM, there is an opportunity to take part in a webinar (Wednesday, November 8th at 12pm EST) to help make this the best Introduce a Girl to Engineering Day yet!

Sign up for the free webinar and you’ll get ideas to help jumpstart your planning and:

• Learn about new resources and programs
• Hear two Girl Day Role Models share their experience
• Discover how you can make a difference in a girl’s future
• Get Inspired!
• And more!

Finishing Strong

We hope you’ll take some time to check out the amazing posts that have been shared with us. We are so thankful to all of our readers and contributors who help make Finishing Strong a key resource for everyone homeschooling through the middle & high school years.

The top posts shared last week

Below are a couple of the posts I most enjoyed from last week. The first post is the one that received the most clicks. You won’t want to miss it! alt title
Boyschooling Homeschool Curriculum for 5th and 12th Grades (2017-18)

from Cindy at Our Journey Westward ~ Cindy coins the term, boyschooling … I love it! Hop over to learn more about the curriculum choices she has made for each of her two boys.

What Some Days in a Girl’s Year 7 Look Like

from Carol at Journey and Destination ~ Carol provides us with a little peak into “a day in the life” of her daughter as they work through Ambleside Online Year 7.

Fall Nature Walk – Scavenger Hunt Lists & Resources

from Heidi at Starts at Eight ~ Nature study is near and dear to my heart. I really miss doing it with my kiddos and need to carve out more time in our week. Heidi shares a great list of resources and materials to implement nature study in your homeschool.

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As always, thank you for helping us to make Finishing Strong a key resource for families who are homeschooling through the middle & high school years.

What are you going to share with us this week?


  1. Link up to 3 posts from your blog. Make sure you use the exact URL to the post, not to your home page. You can add any post related to homeschooling middle and high school students. Posts unrelated to that will be removed.
  2. Please no advertising, individual Pinterest pins, Facebook, Twitter, or other link-up links!
  3. Grab our button to add to your post after you link it up. Each week we will be choosing our favorite posts to highlight on all 4 sites. If you were featured, we would love for you to use the “I was featured” button.
  4. The linky will go live on each co-host’s blog each Wednesday at 6am EST, and will be live until Tuesday at 11:55 pm.

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The Evolution of STEM to STEAM: A Book Review & Activity Resources

When I was teaching full time, there was a big push to increase student participation in science, technology, engineering, and math courses and ultimately encourage youth to pursue these careers. In fact, I was hired as an elementary science specialist and was responsible for the science instruction of over 330 students in 4th – 6th grades. In this role, I discovered my true passion … science education.

The Evolution of STEM to STEAM @EvaVarga.netThe Push for STEM

STEM arose from the desire of policy makers to encourage the natural curiosity of youth and their sense of wonder about these fields. These experts say our young people need strong STEM skills to compete in the world market. We must work together to cultivate the next generation of critical thinkers and innovators.

The US Department of Education reports that the number of STEM / STEAM jobs in the United States will grow by 14% from 2010 to 2020, growth that the is “much faster “ than the national average of 5-8% across all job sectors. Computer programming and IT jobs top the list of the the hardest to fill jobs and yet they are not the most popular college majors.

With this push for STEM programs and my broad work experiences, I have written extensively about STEM concepts. For several years, I coordinated a STEM Club for homeschool kids in our local area and shared many our activities here with you.

STEAM is the Future

The inclusion of the arts component into STEM makes it more fun to learn, and more approachable to kids. Arts and creativity are crucial to these fields and are the tool that allows technology to be usable in real life.

STEAM represents a paradigm shift from traditional education philosophy, based on standardized test scores, to a modern ideal which focuses on valuing the learning process as much as the results. The arts are poised to transform our economy in the 21st century just as science and technology did in the last century.

Fostering a strong STEAM education is our best opportunity to boost the spirit of innovation. It’s what we need to help ensure we continue on a prosperous and secure journey. STEAM literacy is also critical because it has a profound and growing impact on our day-to-day lives. Nature, space exploration, the arts, and any STEAM-related interest reveals to us the beauty and power of the world we inhabit.

steam-kidsSTEAM Kids

I am excited to share with you all a fabulous new book by a group of homeschool moms and science advocates, STEAM Kids: 50+ Science, Technology, Engineering, Art, and Math Hands-on Projects for Kids. They authors have pulled their collective experience and wisdom to provide you with a wealth of fun activities young children will LOVE!

They have just launched and I am delighted to have been given a sneak peak at STEAM Kids in exchange for an honest review. I encourage you to take a peak – I know you’ll love it, too. Over 140 pages of fun hands-on STEAM related activities for young children.

If you’re looking for great hands on activities that encourage children to develop their creative abilities while building upon their skills, STEAM Kids is the answer. Teachers and parents alike will find plenty of ideas to captivate young kids and immerse them in an engaging learning environment.

Like what you see? The STEAM Kids ebook is available for just $14.99!  If you have older kids, consider purchasing copies to give as gifts. One activity a week fully outlined using materials easily found around the house for less than 30¢ a week. You can’t go wrong!

steam-halloweenThat’s not all! During launch week (9/14-9/21), you will also received their STEAM Kids: Halloween activity book free. Thereafter, it will be available for $4.99 so don’t delay. Inside you’ll find 59 pages filled with spooky and sweet Halloween activities perfect for the classroom or at home. Things like pumpkin brush bots, spider web science, Halloween building challenges and more.

As an little expression of gratitude, they’ve also created a FREE Printable highlighting 52 weeks of STEAM activities.

Changing Our World: Girls in Engineering Day Activities

This year marks the 15th anniversary of Introduce A Girl To Engineering Day which aims to mobilize women and men in an effort to connect girls to careers in engineering.

Engineering Day Activities @EvaVarga.netIn years past, we have taken part in several Girls in Engineering events locally, supported by universities and private organizations including the American Association of University Women, The Society of Women Engineers, and SciGirls. As a result, my daughter has been encouraged to pursue a career in a STEM field.

Founded originally by the National Society of Professional Engineers in 1951, National Engineers Week is dedicated to ensuring a diverse and well-educated future engineering workforce by increasing understanding of and interest in engineering and technology careers. The 2016 National Engineers Week is February 21st – 27th.

Only 12% of the nation’s engineers are women, and more than half of school-aged girls say they do not consider careers in science, technology, engineering or math. Misha Malyshev, CEO of Teza Technologies,  works with partner nonprofits to increase educational opportunities and encourage young women to pursue STEM careers.

Learn how you can encourage your girl to take an interest in science and engineering.

Girl Day Celebrates Girl Engineers

February 25th has been designated as Girl Day, an opportunity to teach girls about the difference they can make in the world as an engineer or STEM professional and to celebrate women in STEM. The goal is to show girls how creative engineering is and how engineers are changing our world. 

Engineers Week_Girl DayKids (especially girls) often don’t know about engineering, or they have misconceptions about the field. Whether you are a parent, teacher, counselor, or volunteer here are five things to share about engineers and their work.

Curiosity—Engineers ask lots of questions. Why? How? What if? 

Creativity—Engineering is a great outlet for the imagination—the perfect field for independent thinkers. 

Teamwork—Engineering takes teamwork, and engineers work with al kinds of people inside and outside the field. Whether they’re designers or architects, doctors or entrepreneurs, engineers are surrounded by smart, inspiring people.

Opportunities—An engineering degree offers lots of freedom in finding a person’s dream job. It can be a launching pad for jobs in business, design, medicine, law, and government. To employers or graduate schools, an engineering degree reflects a well-educated individual who has been taught ways of analyzing and solving problems that can lead to success in all kinds of fields.

Helping Others—Imagine what life would be like without pollution controls to preserve the environment, life-saving medical equipment, or low-cost building materials for fighting global poverty. All this takes engineering. In very real and concrete ways, engineers save lives, prevent disease, reduce poverty, and protect our planet.

Hands-on Activities 

Looking for a hands-on activity for your co-op or STEM Club? Here’s are a few of my favorites:

Reverse Engineering Activity—The science of taking things apart to see how they work; kids LOVE this activity.

Protect the Beach—Engineers design and build protection for our beaches, lakes, and rivers. From DiscoverE, this activity demonstrates how waves affect sand on a beach.

Seismic Shake-Up—From Design Squad Global: Hundreds of millions of people live in places around the world where earthquakes are common. Can you design a structure that’s stable and sturdy enough to survive an earthquake’s vibrations? Then test your structure on a shake table, a device engineers use to simulate the shaking of an earthquake.

Build a Simple Motor—Explore in depth how we can convert the potential chemical energy inside a battery to kinetic energy by creating a very simple motor.

Emergency ShelterFrom Design Squad Global: Who might need an emergency shelter—and why? People seeking shelter could include hikers, campers, homeless people, or people caught in a flood, hurricane, or other disaster. Decide who you want to design your shelter for. Then build one sturdy and big enough to hold at least one person.

Build a Roller Coaster—Last time you went on an amusement ride, did you realize it took engineers to design such thrill-producing rides and keep them safe? Different types of engineers work together to build roller coasters. Mechanical engineers might design the loops & drops while structural engineers oversee the structural aspect of the design. Let’s get creative! Design and build a roller.

Engineering: World's Tallest Buildings Unit StudyYou might also be interested in the engineering unit I developed for my STEM Club kids as we explored the World’s Tallest Buildings. This short unit study includes a timeline project, integrated writing assignment, and an oral presentation.

Linking up at Junior High Junction

The Marvels of Bridges: Free Online STEM Class

When I was in the public school classroom, one of my favorite units was an engineering and design challenge – Toothpick Bridges. It required little teacher preparation, kept the kids focused and engaged, and best of all, the kids LOVED it!

When we first began homeschooling, my son was fascinated with bridges. I knew we had to build toothpick bridges. He was pretty young so I made a few modifications to the original lessons and jumped into the unit study. You can read about their first experience in my previous post, Building Toothpick Bridges.

Bridges: Free Hands-on, Online STEM Class @EvaVarga.netNow that they are older and summer is upon us – I thought it would be fun to revisit this challenge. In fact – I want to provide this opportunity to all of YOU!! 

I have put together an eBook, Engineering Marvels: Bridges, that includes a materials list, templates, supplemental lesson plans, bibliography, and additional resources. The online course whereby I will also provide access to instructional videos to walk your children through the process of creating a toothpick bridge of their own will take place in July.

This would be an excellent activity for a co-op!

I’m very excited and wanted to let you know of this opportunity today so you can plan ahead. So gather a few friends together and get ready for a friendly competition.

This opportunity is available FREE to my newsletter subscribers. If you already subscribe – just watch for the next newsletter for the download links and video access codes.

If you don’t yet subscribe, do so today. You will have lifetime access to a multitude of additional science printables and resources.

Science Milestones: The Golden Gate Bridge

One of the seven wonders of the modern world, the Golden Gate Bridge was the life mission of an engineer who had never designed or overseen the building of a suspension bridge. At the time of its construction the Golden Gate Bridge was the longest suspension bridge in the world, built hundreds of feet above the dangerously churning waters of the entrance to San Francisco Bay, the Golden Gate. 

goldengatebridgeJoseph Strauss, a bridge builder from Chicago, had been visiting San Francisco for several years to supervise work on a small drawbridge, one of four hundred he had built around the world. But Strauss’s ambitions far surpassed any work his firm had ever attempted.

Bridges have long been an interest to us a family and we enjoy spending the weekend in the big city of San Francisco whenever possible. We watched the new Bay Bridge as it was constructed but the red hue of the Golden Gate Bridge has always captivated us.


straussJoseph Baermann Strauss was born in Cincinnati, Ohio on the 9th of January 1870. He loved poetry and hoped to pursue a career in the arts like his mother, a pianist, and his father, a painter and writer. Though he never became a fine artist, he would help create one of the most famous bridges in the world.

Following his college graduation, Strauss worked as a draftsman for the New Jersey Steel and Iron Company, and the Lassig Bridge and Iron Works Company in Chicago. Seven years later, he was named principal assistant engineer in the firm of Ralph Modjeski, a Chicago engineer. While working for Modjeski, Strauss developed his trademark “bascule” drawbridge design. Strauss’ bascule was a utilitarian structure, practical but unlovely.

Strauss eventually left Modjeski’s company, forming the Strauss Bascule Bridge Company in 1904. A prolific engineer, he constructed some 400 drawbridges across the U.S. Yet he dreamed of building “the biggest thing of its kind that a man could build.”

In 1919, San Francisco’s city engineer, Michael O’Shaughnessy, approached Strauss about bridging the Golden Gate, the narrow, turbulent passage where San Francisco Bay meets the Pacific Ocean. Strauss campaigned tirelessly over the next decade to build the bridge. He faced enormous opposition from the “Old Guard” — environmentalists, ferry operators, city administrators, and even the engineering community. Yet in November 1930, a year into the Great Depression, voters at last supported a bond issue for Strauss’ bridge. The ambitious project finally had its green light.

Strauss alienated many people in his quest to build the structure, his first suspension bridge. Obsessed with claiming credit as the span’s creator, he minimized the contributions of Charles Ellis and Leon Moissieff, the two visionaries who actually worked out the significant engineering challenges of building the bridge.

On May 27, 1937, the bridge opened to the public. Returning to his other great love, poetry, Strauss composed verse for the occasion, exulting, “At last, the mighty task is done.” It would be the last mighty task of his life. Exhausted, Strauss moved to Arizona to recover. Within a year, he would die of a stroke.

Bring it Home

  • Read about some of the opposition to the bridge. Then prepare a poster expressing either support for, or opposition to, the Golden Gate Bridge project. Your poster should reflect one of the arguments made for or against the bridge at the time it was being debated. Illustrate your poster with a drawing of the benefit or harm the bridge would bring to your community.
  • During his campaign, Strauss had bribes distributed to members of the San Francisco Board of Supervisors to secure their support for the project. Imagine that you are a young newspaper editor in San Francisco at the time and you have just learned about these bribes. How could you respond in a way that would be in the city’s long-term interest? Write an editorial condemning the bribes or praise the project as necessary regardless of the maneuvers that might be necessary to make it happen.
  • Read about Irving Morrow, about the man who designed the Golden Gate Bridge’s distinctive Art Deco features. Find a photo of another building or other object designed in the Art Deco style and explain what you like about the style. Alternatively, choose another bridge or building structure, find out what style of architecture it represents, and explain why you like it.
  • Coordinate a toothpick bridge building competition amongst your friends.
  • People love suspension bridges for many reasons: their beauty, their utility, their mathematical elegance, their long spans, or even for the regional bragging rights they confer. Research other suspension bridges around the world and create a PowerPoint or a webpage to share with others what you learned.
  • Learn how the Golden Gate Bridge was financed. What is a bond? Why do governments issue bonds? Why do voters have to vote to approve a bond issue? What is “collateral” and what did these six counties use as collateral for the bonds?
  • Visit the Golden Gate Bridge and the Golden Gate Bridge Pavilion yourself and learn more about the construction of this Strauss’ first suspension bridge.
  • While in San San Francisco, enjoy the Golden Gate Treasure Hunt in honor of the 75th Anniversary.

Science Milestones

100 Science Fair Projects

The new school year is well under way. In many science classrooms around the world, students are engaging in hands-on science experiences. Many are beginning to give thought to the annual science fair project that often takes place in the spring.

Inquiry based science fair projects are the keystone of student science fairs. They follow the scientific method rather closely and have several parts including a control and a variable.

Inquiry based science projects allow students the opportunity to become the scientist themselves, using their own observations and experiences to ask questions and form hypotheses. Ultimately students design an experiment to test their hypothesis against variables.

Independent Variable: What the scientist will be changing during the experiment
Dependent Variable: What the scientist will be measuring or observing.
Controlled Variable: What the scientist keeps the same during the experiment.

100sciencefairMany educators believe all hands-on science is inquiry science, but that is not accurate. Inquiry implies that students are in control of an important part of their own learning where they can manipulate ideas to increase understanding. As students learn to think through the designs and developments of their own inquiry, they also develop a sense of self-responsibility that transcends all subject areas.

At the elementary level, science depends on the ability to identify and accumulate facts (grammar stage), organize and analyze those facts (logic stage), interpret and theorize about the facts, and communicate those interpretations and theories to others as they move investigations into their communities and participate in solutions to science and technology issues (rhetoric stage).

The 5 features of science inquiry

  • Student Engages in Scientifically Oriented Questions
  • Student Gives Priority to Evidence in Responding to Questions
  • Student Formulates Explanations from Evidence
  • Student Connects Explanations to Scientific Knowledge
  • Student Communicates and Justifies Explanations

Although each component is important, helping students use evidence to create explanations for natural phenomena is central to science inquiry. You can reinforce the creation and critiquing of arguments in your classroom by asking, “How do you know?” Student answers (both verbal and written) should include evidence. Additionally, you should look for opportunities for students to critique the use of evidence in science news, reports and other media.

Students should practice science in the classroom the way that scientists and engineers do. Provide opportunities to work in collaborative groups to solve problems and explore challenges. Science and engineering practices should not be isolated inquiry activities, but 
permeate the entire curriculum.

Below are 100 ideas for incorporating inquiry science into you curriculum and to kick-start the planning for your science fair project.

100 Science Fair Projects

Life Science

  1. Study the conditions under which mold grows best.
  2. Figure out what is the best preservative to prevent mold growth.
  3. Do plants really respond to music? Affection? Sound?
  4. What type of fertilizer or “plant food” works best?
  5. Sugar level in plant sap at different times and dates
  6. Effect of salinity on brine shrimp or other organism
  7. Can paper chromatography be used to identify different species of plants?
  8. Study the effects of phosphates on aquatic plants.
  9. Compare organic fertilizer versus chemical fertilizer.
  10. Test the effects of heat, light, carbon dioxide, pH level, etc. on the germination rate of monocots compared to dicots.
  11. What factors affect the rate of photosynthesis (temperature, light intensity, water, carbon dioxide, part of the light spectrum, etc.)?
  12. Do the numbers and sizes of leaf stomate vary with different plants?
  13. Study the effect of light or temperature on Vitamin C content of orange juice.
  14. What are the effects of water temperature on the color of fish?
  15. Do the non-smoking sections in a restaurant protect you from second-hand smoke?
  16. Does caffeine have an effect on blood pressure?
  17. Are herbs (or essential oils) a viable alternative to modern medicines?
  18. Which is better – commercial antacids or herbal remedies?
  19. Does playing video games affect heart rate?
  20. What time of bread grows mold the fastest? Compare the buns of various fast-food restaurants.
  21. Are some types of makeup more prone to bacterial growth?
  22. Compare the rate of mold growth on different milk samples (Vitamin D fortified, 2%, 1%, RAW, etc).
  23. Study of insect of animal behaviour versus population density.
  24. Study insects’ adaptations to pesticides or availability of food. Does their body structure change over time?
  25. What is the effect of caffeine or tobacco on the growth of mealworms?

getting started cover

I have written a guidebook to inquiry science with middle school students. It is available in my store.

Earth Science

  1. Does the height of a volcano affect the viscosity of the lava?
  2. Grow a crystal garden. What factors affect the rate and size of crystal growth?
  3. Is there a relationship between sunspot cycles and earthquakes?
  4. Study the small scale wind currents around buildings.
  5. What effects the rate of evaporation the most – temperature, humidity, wind speed, or other factors?
  6. Make observations of geomorphic factors in your local area.
  7. Do the phases of the moon affect the barometric pressure?
  8. Make an instrument to test the soil and find out how compacted it is.
  9. Study the effects of solar activity on radio reception.
  10. What factors affect the slope stability of sand/gravel hillsides?
  11. What substance is best to use in blocking floodwaters?
  12. Study the impact of feed lots on the environment.
  13. How does particle size affect the porosity of soil?
  14. Explore methods of controlling erosion.
  15. Compare the erosion rates of different soil types.
  16. How does the weather affect the salinity of natural aquifers (lakes, rivers, bays, etc.)?
  17. Some intertidal animals in the low tide zone and others in high tide zones. How much time does each zone spend out of water during a tidal cycle?
  18. When are tidal height differences the greatest?
  19. Study the effect of water depth on wave velocity.
  20. Does the moisture content of soil affect the color?
  21. Can mapping earthquakes help identify fault lines?
  22. Build a simple model system to simulate underground water flow, simulate various underground conditions, and test your predictions on water flow.
  23. Which materials make the best compost?
  24. How does soil affect the pH of water?
  25. Investigate how the volume of wet sand changes under pressure.

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Physical Science

  1. Explain how trajectory affects flight distance and vice versa in paper airplanes.
  2. Explain how putting a spin on a ball affects the flight pattern. (How does a curve ball work?)
  3. Which anti-bacterial hand lotion is most effective? (Grow your own bacteria in a petri dish.)
  4. Which brand of popcorn is best? (As judged by which brand leaves the least amount of kernels unpopped.)
  5. Which stain remover works best?
  6. Analyze soil samples for their components, ability to hold moisture, fertility, and pH.
  7. Test the mineral concentrations in hard and soft water.
  8. Compare the results of a common gak or silly putty recipe using different types of glue.
  9. What types of paper decompose the most rapidly when buried?
  10. Compare the surface tension of various liquids.
  11. Study the radiation patterns from different antenna types.
  12. Do bends in fiber optic cable cause loss of audio data transmission?
  13. How does the curvature or materials of different lenses affect a light beam?
  14. Does water droplet size affect rainbow brilliance?
  15. How will the height from which an object falls affect the distance another object moves when struck?
  16. How is the density of a substance/object changed as its temperature changes?
  17. Measure your reaction time and compare it to your friends and family with this fun experiment.
  18. How does the position of a violin or guitar affect the volume?
  19. Do different businesses play different tempos in background music?
  20. Do different businesses use different air fresheners or scents to influence their customers?
  21. Determine how high a basketball bounces on different surfaces relative to the height from which it was dropped.
  22. Find out how the simple aperture design of a pinhole camera works to control the way light enters the lens of your camera.
  23. What setting of a digital camera takes the better picture of a small object?
  24. How does the shape of a bottle affect the sound when you blow across the top?
  25. Test the absorptivity of different materials (sorbents) to discover which ones are best at removing oil from water.

science fairs

I wrote a five day series earlier this year, The Ins & Outs of Science Fairs, to provide a step-by-step approach to creating a successful science fair project.

Engineering & Design

  1. How do different bridge designs affect the strength of the bridge?
  2. What is the most efficient design for a windmill?
  3. How does the weight and shape of an object affect the rate by which it sinks?
  4. Why do the inside of cars get so hot in the sun? What ways can you reduce this heat?
  5. Design and build an automatic recording weather device. Test it over a period of time.
  6. Create a 3-dimensional, free-standing marble run.
  7. Comparing insulative properties of various natural and commercial insulators. Which are the best?
  8. Which style of roof truss is the strongest?
  9. Demonstrate how an AM radio detector can be constructed out of scrap materials and explain the function of the various components.
  10. How does air pressure, materials, and construction of a ball affect its ability to bounce?
  11. Design a spaghetti noodle and mini-marshmellow tower.
  12. How much force is required to advance a lag bolt (large wood screw with a hex-shaped head) into a piece of wood? How do different types of wood compare?
  13. Is there a correlation between electric motor cooling and efficiency?
  14. What is the most efficient design for a windmill?
  15. Invent a device that can launch a pom pom or marshmallow (the farther the better).
  16. Design and construct a robotic insect.
  17. Create a Bristlebot (made from the head of a toothbrush, a battery, and a small motor) and compare the speed of different toothbrushes.
  18. Test a variety of skateboard wheels on their ability to make a 90 degree turn.
  19. How does ski wax affect the sliding friction of skis? You can model this with an ice cube sliding down a plank: how high do you need to lift the end of the plank before the ice cube starts to slide?
  20. Can you design a toy car that is powered by wind? What is the best design?
  21. Build a water clock.
  22. Can aquatic plants promote pesticide breakdown?
  23. Determine the best gear ratio for your bike, to get the highest speed after a curve and onto a straightaway.
  24. Can rooftop gardens also keep your house cooler and lower your energy bill?
  25. Investigate how changing the angle of an inclined plane affects how the Slinky walks down it. What angle will enable the Slinky to go for the best walk?


For more science resources, check out these wonderful 100 Things posts by my friends at iHomeschool Network:



This post is one of 100 posts compiled by the bloggers of iHomeschool Network, 100 Things. Be sure to visit and enter to win over $370 in cash and prizes.