2nd - 4th Grade Science Projects Resources : Page 10

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

This biodiversity project examines the biodiversity in your own backyard.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

Test your friends to find out if you can replicate the placebo effect's incredible results.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

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

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

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

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

This science experiment tests if dog saliva can really help heal wounds.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

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

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.