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In this activity, learners explore the different salinities of various sources of water by taste-testing.

In this activity, learners discover how the extent of various wind speeds changes in each of the four quadrants around a hurricane.

Learners use M&Ms® (or any other multi-color, equally-sized small candy or pieces) to create a pie graph that expresses the composition of air.

In this activity (page 1 of the PDF under SciGirls Activity: Double Dutch), learners will stand twelve feet apart swinging a rope at the slowest tempo possible while someone uses a stopwatch to record

In this activity, learners will measure the length of a shadow and use the distance from the equator to calculate the circumference of the earth.

This activity investigates how bark beetles can threaten forests by having learners estimate the number of infected trees from a photo.

In this demonstration, learners explore a variation of a Foucault pendulum, but upside down.

In this activity, learners will explore how and why weight distribution works.

In this activity, learners explore atoms as the smallest building blocks of matter. With adult help, learners start by dividing play dough in half, over and over again.

In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.

In this activity learners will investigate magnetic and non-magnetic items in a sensory bottle.

In this quick activity about the properties of water (page 1 of PDF under SciGirls Activity: Malformed Frogs), learners will use an eyedropper to slowly place one drop of water at a time onto a penny,

In this activity, learners burn a peanut, which produces a flame that can be used to boil away water and count the calories contained in the peanut.

In this activity, challenge learners to predict and investigate how many water drops they can fit on one penny.

In this math activity related to light, learners explore why a light, such as a candle or a streetlight, looks dimmer the farther away from it we get.

In this activity on page 3 of the PDF, learners investigate how much sugar is in a soda. Learners use sugar cubes to measure and calculate the amount of sugar in a bottle of soda.

In this activity, learners estimate how much water they think can be found in various locations on the Earth in all its states (solid, liquid, and gas) to discover the different water ratios in the Ea

In this fun sticker activity, learners will create a size wheel with images of objects of different size, from macroscopic scale (like an ant) to nanoscale (like DNA).

In this math activity related to light, learners assemble a photometer and use it to estimate the power output of the Sun.

In this activity, learners make and test fly paper helicopters. Learners use templates to create paper helicopters and then take take turns flying them in the air.