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In this math lesson, learners explore and investigate measurement using standard and non-standard units.

In this activity, learners explore how spring scales work and how they are used for non-exact weight measurement.

In this activity, learners explore sensors and focus specifically on how to measure humidity using a sensor.

In this activity, learners are challenged to calculate their own weight on various planets using a scale and calculator. Older learners may be challenged to do so without using calculators.

Learners build a simple one-cell battery and use an ammeter to measure the flow of current.

In this activity you'll see how the sun's tilt on its axis changes the length of shadows. For example, why is your shadow longer in winter than in summer?

In this activity, learners build edible models of Jupiter and Earth to compare their sizes and illustrate the planets' internal layers.

In this activity, learners test the rate of ripening fruit and vegetables and use a chemical to inhibit the ripening process.

In this activity (page 18 of PDF), learners will measure the volume of impact craters created by projectiles of different masses.

In this demonstration, learners compare the relative sizes and masses of scale models of the planets as represented by fruits and other foods.

In this activity, learners work in teams to investigate the relationship between mass, acceleration, and force as described in Newton's second law of motion.

In this activity (page 23 of PDF), learners conduct an experiment to determine how the size and mass of a projectile affects the area and the volume of an impact crater.

In this chemistry challenge, learners discover that many chemical reactions involve heat loss or gain.

In this activity, learners investigate the sense of sight and develop and conduct their own experiments.

This activity (page 2 of the PDF under SciGirls Activity: Bogs) is a full inquiry investigation into decomposition.

This activity (on page 2 of the PDF under SciGirls Activity: Doghouse Design) is a full inquiry investigation into absorption and reflection of radiant energy.