Projects, Lessons, Activities (Page 116)

Radiant Radish Seeds

Science Fair Project Idea

Scientific Method

We all know that plants need sunlight and water to grow big and tall. But did you know that inside seeds are baby plants, and that the fragile baby plant inside the seed needs to be protected? If you've ever had a sunburn, you also know that the sun gives off harmful radiation and heat. How much radiation and heat can a seed handle? Find out using some radish seeds, an oven, and your microwave! Read more

Rolling Race

STEM Activity

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Imagine rolling two identical cans down a slope, but one can is empty and one is full. Which one will reach the bottom first? You might have learned that when dropped straight down, all objects fall at the same rate regardless of how heavy they are (neglecting air resistance). Is the same true for objects rolling down a hill? Try this experiment to find out! Read more

Rubber Band Car Challenge for Grades 3-5

Lesson Plan Grade: 3rd-5th

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In this fun engineering lesson plan, your students will build rubber band-powered cars using readily available craft supplies. The challenge is to build a car that goes as far as possible while making careful use of materials. Middle school and high school versions of this lesson plan are also available. This lesson was part of the 2024 Science Buddies Engineering Challenge. Note for K-2 teachers: you can do this challenge with younger students too! Contest entry is open to all K-12… Read more

NGSS Performance Expectations:

3-5-ETS1-2. Generate and compare multiple possible solutions to a problem based on how well each is likely to meet the criteria and constraints of the problem.

Rubbing Up Against Static Electricity

STEM Activity

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Have you ever wondered why rubbing a balloon or a blanket—or even a winter hat—on your head makes your hair stand up? The effect is due to static electricity, but how is the static electricity made, and why does it make your hair stand on end? Static electricity is the buildup of electrical charge in an object. Sometimes static electricity can suddenly discharge, such as when a bolt of lightning flashes through the sky. Other times, static electricity can cause objects to cling… Read more

Scrumptious Science: Shaking for Butter

STEM Activity

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Have you ever wondered how butter is made? Butter is used in many tasty applications – hot pancakes with butter running down the sides, freshly baked biscuits and pastries with butter, and hot flaky potatoes with melted butter, to name just a few. Yum! While making butter can be hard work, it can also be easily made at home. In this activity you’ll not only get to find out how butter’s made, but also how temperature affects the butter-making process. … Read more

SeaPerch: An Underwater Robot

Science Fair Project Idea

Engineering Design Process

Underwater robots, or remotely operated vehicles (ROVs), help us explore areas of the ocean that can be dangerous for humans. They can provide valuable scientific information about deep-sea life and ocean climate. However, you do not need access to the ocean to build and test your own ROV. If you have ever wanted to build your own ROV but were not sure where to start, the SeaPerch platform is a great option. You can purchase a complete kit with all the required parts and follow the detailed… Read more

Seasonal Science: The Reasons for the Seasons

STEM Activity

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Have you ever lived someplace where you get to experience the full glory of all four seasons? If so, you know well the heady blossoms and dramatic skies of spring; the long, sun-drenched days of summer; the trees shaking in crimson and gold in fall; and the sparkling, brittle snows of winter. But do you know why we have these seasons, over and over again, in a cycle as predictable as the rising and setting of the sun? It actually has to do with the Earth’s tilt and the Moon. In this… Read more

Separating Glitter with a Homemade Centrifuge

Science Fair Project Idea

Scientific Method

It is fun to shake up a snow globe and watch the "snow" slowly fall. You can imagine that if the snow fell down very quickly it would be disappointing. But there are times when scientists in a laboratory want this to happen. Scientists use samples that have liquid mixed with small, solid pieces (like the inside of a snow globe), and they need all of the solid pieces in a clump, separated from the liquid. Instead of waiting for the pieces to slowly fall out of the liquid, scientists speed up… Read more

Simulate Microchip Clean Room Contamination with Crayon Leaf Rubbings

Science Fair Project Idea

Scientific Method

Have you ever made a leaf rubbing or imprint using paper and crayons? What do you think would happen if you got dirt or sand on the leaf? Would it mess up the result? In this project you will find out and learn about how this is related to the process of making the microchips that run our phones, computers, and other electronic devices. Check out this page for more science projects related to this process. Read more

Single-Celled Science: Yeasty Beasties

STEM Activity

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Have you ever looked at a package of dry yeast and found it hard to believe that it contains organisms that are alive? Add the right ingredients and presto, the mixture becomes a bubbly, oozing, mess of life! But what are the conditions that are needed for this to happen? What does that yeast need to become active and thrive? Try this science activity to find out for yourself! Read more

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