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Learners investigate the concept of humidity by using a dry and wet sponge as a model. They determine a model for 100% humidity, a sponge saturated with water.

This activity (on page 3 of the PDF under GPS: Baseball Activity) is a full inquiry investigation into how "bounciness" relates to the distance a ball will fly when hit off a batting tee.

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

In this activity, learners discover how to determine the distance to a lightning strike or nearby thunderstorm.

In this fun hands-on activity, learners whip up a batch of cyber-dough (play dough) using math for measurements.

In this outdoor activity, learners investigate the relationship between the slope of a trail and soil erosion.

In this math activity, learners create their own units of measurement by making noodle rulers. Learners practice estimating and measuring objects using the noodle rulers .

In this activity, learners get hands-on experience with ratios and scaling while making their own jewelry out of recycled plastic containers.

In this outdoor biology and math activity, learners estimate the size of a population of organisms too numerous to count.

This investigation provides learners with a hands-on activity that simulates the changing relationship of surface areas-to-volume for a growing cell.

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

This is an activity (located on page 4 of the PDF under Surface Area Activity) about surface area and reactivity.

In this fun math activity (page 5 of the pdf), learners will help a secret agent crack a case by solving math problems.

In this team design challenge (page 19-24 of PDF), learners "land" a model Lunar Rover in a model Landing Pod (both previously built in activities #3 and #4 in PDF).

In this activity related to the human circulatory system (on page 10 of the PDF), learners observe the dispersion of a drop of food coloring in water, draw conclusions about the movement of dissolved

In this activity, learners estimate risks associated with different events and compare their estimates to the real possibilities.

In this activity (18th on the page), learners conduct an experiment to examine memory.

This activity (on page 2 of the PDF under SciGirls Activity: Extreme Sounds) is a full inquiry investigation into sound.

In this math lesson, learners explore polynomial and rational function patterns.

In this math activity, learners use non-standard measurement (paces) to find the distance from one point to another. Learners practice estimating and measuring distances .