Science fair project that compares leaf pigments of various tree species. Which tree species do you think will have the most pigments and why?

The possibilities are endless with this fun Halloween-themed STEM activity! With simple supplies, your child will experiment, adapt, and use their creativity while they build structures using different specifications.

Check out this fun leaf chromatography science fair project idea for middle school students and discover the hidden pigments in leaves.

Science fair project idea that compares number and relative sizes of leaf stomata. Collect leaves of plant species, identify, observe stomata with microscope.

Science fair project that compares tree leaf size and shape based on the leaf's position in the tree. Is their is a noticeable difference between high and low?

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

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

Learn all about balance and motion as your child designs a corn maze!

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

This science experiment explores why leaves change color in the fall and the role of photosynthesis in leaf coloration.

Observe which kind of fresh long-stemmed flower will last the longest after being picked.

The apparent movement of the sun has been used to keep time since the bronze age. In this science fair project, kids plot solar time against mean solar time.

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

This science project is to discover which Black Walnut tree tissue contains the most concentrated amount of Juglone, a substance that works like an herbicide.

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

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

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.

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

Science fair project which compares the rates of photosynthesis for various light sources. Which type of light will be best for photosynthesis and why?

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

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

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

This science fair project examines the vein structure (venation) of leaves in order to determine the class of the plant sample.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

This experiment will explore if and where fractals can be found in the natural world.

This project compares the national anthems of several different countries to determine if there is a correlation between tempo and a country's latitude.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!