In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!