3rd - 7th Grade Engineering and Science Inquiry Activities : Page 18

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

This science fair project examines how seeds hitchhike on animals and clothing.

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

Cleaning can be a chore, but not with this sudsy experiment!

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

Science fair project which determines whether a person's taste in music is dictated by the key that the song is written in.

This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

Determine if gender affects the ability to identify different smells.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

This science fair project idea examines how well individuals can remember a story they were told and how accurately they pass that story along.

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

In this science fair project you will make a model of a cell membrane using very simple material.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

This science project allows students to study the psychology of happiness.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

This experiment tests which gender is better at catching how a magician performs his tricks.