2nd - 4th Grade Science Activities : Page 16

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

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

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

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Explore if planting seeds in a certain direction will affect how fast it germinates.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

Help your child get to know the least-appreciated of the five senses, the sense of smell, with a smelling station.

This science fair project teaches students about wilting and browning of salad greens.

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!

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

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

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

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

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

Introduce your second grader to the crazy world of static electricity with just a balloon and a sheet of paper.

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

Introduce your child to the amazing, almost magical phenomenon of static electricity!

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

In this experiment we will be determining whether birds prefer certain colors of seed.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

Let your young scientist explore a brave new world of sound with an experiment that just requires a handful of common household items.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

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!

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

Help your child plant a âtea garden": a garden made of herbs for making teas.