Seventh Grade Projects, Lessons, Activities (Page 65)

Solar-Powered Classroom

Lesson Plan Grade: 4th-8th

Would it be possible to power everything in your classroom using clean, renewable solar power? Inspired by Global Problem Solvers: The Series, in this lesson plan, your students will research and design a solar power system for a mobile classroom that can be used after natural disasters or in remote areas without permanent schools. This lesson is one of three independent lesson plans inspired by Global Problem Solvers: The Series. You can read more about the series and the lesson plans… Read more

NGSS Performance Expectations:

3-5-ETS1-1. Define a simple design problem reflecting a need or a want that includes specified criteria for success and constraints on materials, time, or cost.
MS-ETS1-1. Define the criteria and constraints of a design problem with sufficient precision to ensure a successful solution, taking into account relevant scientific principles and potential impacts on people and the natural environment that may limit possible solutions.

Space Radiation Protection

Science Fair Project Idea

Engineering Design Process

The radiation sources recommended in this experiment are low-dose radioactive sources and do not require a license to purchase; they are safe to work with as long as these common-sense safety tips are followed: Wear disposable gloves when handling any radioactive source. Never rub your eyes or mouth while you are handling the radioactive source. NEVER swallow any radioactive source and use protective glasses when bringing a source within a few inches of… Read more

Squirrel Obstacle Course: How Far Can Squirrels Jump?

Science Fair Project Idea

Scientific Method

This project idea is inspired by former NASA engineer Mark Rober's "Squirrel Ninja Obstacle Course". You do not need to build a full obstacle course as intricate as Mark's (although you certainly can if you want to!) to make this into a fun science project. For example, how far can squirrels jump? You could test this question by building a mobile post and placing it next to a bird feeder. The bird feeder in Figure 1 is mounted on a metal pole. The pole is protected by a squirrel baffle, a… Read more

Squishy Robot Simulator

Science Fair Project Idea

Scientific Method

What do an octopus, an elephant's trunk, and an earthworm have in common? They are all squishy, bendable and flexible because they do not have any bones inside. You might not typically think of robots as "squishy," but scientists are increasingly trying to create soft robots that look and move like animals. In this project you will use a "soft robot simulator" to design and race your own squishy robots. Can you come up with the fastest design? Read more

Stargazing for Satellites

STEM Activity

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Throughout history, people have always been captivated by celestial objects like stars, planets, and the Moon. Now, man-made satellites have entered the picture. Did you know you can see many satellites with the naked eye? Try this activity and find out for yourself! You will even learn how to classify them! Read more

Stomata Printing: Microscope Investigation

Lesson Plan Grade: 3rd-12th

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"Backlit Leaf" © 2011 Threthny Plants have many crucial roles on our planet, and among these is the gas exchange that happens within their leaves. As plants take in carbon dioxide from our atmosphere, they release oxygen and retain the carbon. In this lesson, students will investigate leaves up close to look for the structures responsible for gas exchange. Read more

Strength in Numbers?

Science Fair Project Idea

Scientific Method

Ever try to tear a telephone book in half? Even though you can easily rip one or a few pages to shreds, the entire phone book has strength in numbers and holds together. This project is an introduction to measuring and comparing the strength of materials. Does spaghetti get extra strength if you bundle it together, or does strength simply increase proportionally with the number of strands? If you are interested in materials testing, get cracking! Read more

Strength of Glues

Science Fair Project Idea

Scientific Method

Try gluing wood together with different types of glue, e.g.: regular white glue, yellow wood glue, cyanoacrylate (super glue), and Liquid Nails. Glue a short piece (5-8 cm) to the center of a longer piece (15-30 cm). After the glue has dried for the recommended time, drill a small hole through the center of the joint, big enough to pass through a piece of coat-hanger wire. Cut a length of coat hanger wire, pass it through the hole, and twist the ends together to form a loop. Place the ends… Read more

Stressed Out? Take a Break with this Project!

Science Fair Project Idea

Scientific Method

Is an I-beam as strong as a solid beam of the same size? What if you include weight in the comparison: which beam has the greater strength-to-weight ratio? Would an I-beam be stronger than a solid rectangular beam of the same weight? What about other structural shapes (e.g., T-beams, U-beams)? In this project you can find out by setting up a test stand, putting on your safety goggles and measuring how much stress these building components can handle before they snap. Read more

Study the Effect of Fertilizers on Algal Growth

Science Fair Project Idea

Scientific Method

You might not know it, but a lake without algae would be a very dull place. If there were no algae, there would be no small animals feeding on the algae, and there wouldn't be any fish eating the small animals that eat the algae. You might conclude that since some algae is good, more algae is even better, but algae growth has a down side. If there is too much algae, they can deplete the oxygen in the water, killing off other species in the water. What is one culprit that leads to algal growth?… Read more

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