Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

Compare animal and plant fats and observe, and record, and draw conclusions about their similarities and differences.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

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 experiment works due to a simple principle: plants need light. Build a shoebox maze and watch the plant work though the obstacle course, searching for sun.

Ethanol can be used as an alternative fuel! The purpose of this experiment is to identify a starch plant that produces the largest quantity of ethanol.

In this science fair project, students examine how temperature affects sugar transport within a plant.

The project investigates the affect music has on plant growth while experimenting with rock, classical and no music.

This first grade science activity is great for winter! Your child will grow and observe her own amaryllis bulb, keeping a journal of her scientific findings.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

Explore this fun science fair project idea to investigate different microclimates in and around your home and their effects on the plant and animal life.

The garden is the perfect place to practice math and science with preschoolers. Get digging (and counting, sorting, observing at the same time!)

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Observe if dissolved aspirin will help plants grow healthier and faster in this science fair project idea.

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

Store seeds under three different environmental conditions. Plant seeds in carefully marked groups, watch them grow. Compare results.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

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 project explores whether music affects the growth and health of plants.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

This science fair project idea determines which flower lasts the longest.

Do you think heat can affect a plant's growth rate?

This science fair project idea deals with the qualities of shade on a sunny day.

This science fair project idea tests the effect of heat- at varying temperatures- on the viability of biological enzymes.

The purpose of this science project is to investigate which will grow larger plants: compost, soil and Miracle - Gro, a mixture of both.

The objective of this science fair project is to examine the cleanliness of salad preparation techniques.

This science fair project idea investigates food preference of birds.

This science fair project investigates how temperature of a room affects the burn rate of a candle.