This science fair project evaluates if and how eating a large meal affects ability to perform mental tasks.

This project investigates the affect of storage temperature on microwave popcorn.

The project researches how lubricants affect the mechanical advantage of a pulley.

This science fair project idea measures physical dexterity as a function of temperature.

Easy and cool middle school science fair project on ripening process of fruits and measures you can take to prevent fruits from rotting and delay ripening.

Investigate the advantages of the use of ceramics in engines such as the tiles used in Space Shuttle. Use iron filings and magnets.

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

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

Science fair project that tests the correlation between outdoor temperature or weather conditions and the number of visible stars at night.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This science fair project idea assesses the effect of music on work performance.

Determine which seeds are most likely to survive harsh winter conditions (low temperatures).

Determine whether the application of Febreeze will lower the bacterial count.

Take the art making outside: have your first grader make a clay relief sculpture of the natural world. This is a great activity for summer.

This activity provides a solution to all those leaves on your doorstep, while also giving your child a fun science lesson.

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

Determine the relationship between the speed of a sound and the temperature of the air it passes through.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

This project examines which style of central-air system filter traps the most particles from the air.

This experiment determines the distribution of darts around a bulls eye to simulate the probability of an electron's location in its own cloud of electrons.