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Make a copy of the first stethoscope with only a cardboard tube! René Laennec invented the first stethoscope in 1819 using an actual paper tube!

In this activity, learners discover how hard their hearts work to pump blood.

This online game tests reaction time. The learner controls a computer-generated frog, and must press a button as soon as a fly appears on the game's radar screen or can be heard from the speaker.

In this activity, learners will investigate how shorebirds and seabirds are extremely vulnerable to changes in their environment, whether human-induced or otherwise.

Learners make a "menu" of any plants in their lunch for Monday through Friday and draw the plants from their lunch.

In this online interactive, learners use fossils to infer temperatures 55 million years ago, at the sites where the fossils were found.

Learners work together as a group to learn a new physical activity. After working for a few rotations, learners time themselves as part of a contest.

In this activity, learners investigate parallax, a method used to measure distances to stars and planets in the solar system.

In this online simulation, learners use antibiotics to cure patients with bacterial infections.

Learners work in teams to investigate how scientists use physical characteristics to classify living things.

In this game, learners walk through an imaginary Carbon Cycle and explore the ways in which carbon is stored in reservoirs and the processes that transport the carbon atom from one location to another

This is an activity (located on page 3 of PDF under Where's Nano? Activity) about identifying nanoscale objects and phenomena in today's world.

This is a virtual representation of a sound mixer containing pre-looped sounds of animal, insect, and environmental noises.

In this activity, learners will plot the distribution of various oozes using information from sediment maps.

In this activity (page 87 of the PDF), learners move their bodies to better understand the three axes of rotation: pitch, roll and yaw.

In this activity, learners discover how artists start with a skeleton and turn it into a realistic drawing of a dinosaur.

In this online activity, learners create monsters and see how they survived when released into the wild.

In this activity, learners explore how their depth perception would be affected if they only had one eye. Learners work in pairs and attempt to drop a penny in a cup with one eye covered.

In this activity, learners discover the three R's of environmental protection: reduce, reuse, and recycle.

In this online activity, learners make a whole rainbow by mixing red, green, and blue light. They can change the wavelength of a monochromatic beam or they can filter white light.