Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

With this hands-on activity, you'll show how fall colors are hidden in the leaf all year long!

This science project teaches students to classify different shapes of leaves.

Celebrate autumn with a seasonal bash. Welcome the fall with a festive party for your little one and her friends, full of crafts, snacks and fun games.

This science fair project idea identifies trees using a dichotomous key.

This science fair project idea demonstrates that plants give off water.

Help your fifth grader trace your family's roots and interview all the living mothers to create a makeshift, 3-D family tree!

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

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

Here's a fun activity that will have your child researching, collecting, and charting plant specimens from the neighborhood.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

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.

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

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

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

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

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

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.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.