This science fair project idea identifies clouds as a means of predicting the weather.

Introduce your fourth or fifth grader to volume by having him build rectangular prisms, and then count each sugar cube to check his volume calculations.

Use familiar household items and decorations to turn estimation into a fun game!

This fun activity encourages your child to develop their skills in not only taking measurements, but also in working with the measurements themselves.

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