Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

Kids conduct a simple birdseed experiment to figure out what kinds of birds live nearby in this fun science activity.

In this game, players will learn interesting facts about animal adaption and practice them using a fun matching card game!

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

This science fair project idea experiments with spinning color wheels and optical illusions.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

In this activity your child will make a coiling snake out of simple household materials, and also find out why they coil.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Try hammering some plants with your kids to teach them a valuable lesson in flower science while making beautiful artwork in the process!

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

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

Make sourdough bread...and learn some colonial history and modern science in the process!

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.