2nd and 3rd Grade Science Activities : Page 6

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

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

Help your curious third grader construct a dazzling spinning wheel that will teach him about the science behind colors while providing some silly entertainment!

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

If your science savy third grader is up for a challenge, let her bend light with a casserole dish!

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

Help your child celebrate the summer and the sun by making a sandy seascape.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

This project compares the strength of one, two, and three-ply toilet paper.

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

The concept of metamorphosis is fascinating to children of all ages. Help your child's creativity take flight as she makes her very own butterfly life cycle.

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

Teach your child how butter is created by shaking up cream the old-fashioned way.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.