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In this optics activity, learners examine how polarized light can reveal stress patterns in clear plastic.

This laboratory activity helps learners understand the concept of biological succession by simulating the process in a microenvironment with various protozoans.

Cool off in the heat with this project! Learners use simple materials to build a fan that runs on a motor.

This activity (8th activity on the page) tests learners' ability to identify things using only the sense of hearing.

In this long-term activity, learners make a home for a colorful community of microorganisms.

In this activity related to Archimedes' Principle, learners use water displacement to compare the volume of an expanded gummy bear with a gummy bear in its original condition.

In this activity, learners construct an indoors obstacle course and discover how using an eye patch can help them complete the course in the dark.

This hands-on astronomy activity allows you to create a “cutaway” telescope to clearly show how reflector and refractor telescopes work.

This activity is designed to let learners measure their reaction time or response time to something they see.

In this activity (9th activity on the page), learners work in pairs to see how their perception of touch differs from reality.

This is an educator-led demonstration of microarray technology using a model created from a pizza box and ping-pong balls.

In this activity, learners investigate the touch sensory system and discover how to plan and carry out their own experiments.

In this neuroscience activity (4th activity on the page), learners make their own set of Von Frey hairs to test detection thresholds.

In this genetics activity, learners discover how to extract DNA from green split peas.

In this activity (10th activity on the page) about the sense of touch, learners make Braille letters out of cork or cardboard and map pins.

In this activity, learners create a model of a neuron by using colored clay or play dough. Learners use diagrams to build the model and then label the parts on a piece of paper.

This is a chemistry lab activity about solutions (page 7 of the PDF). Learners see firsthand how chemicals in a solution can combine to form an entirely different substance.

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

In this activity, learners take their own pulse and explore how heart rate is affected by various activities.

In this activity, learners will use cereal to conduct an experiment and investigate how decreased bone density is related to increased risk of bone fracture.