Bloodsuckers are invading! Explore the science of what’s biting you! Examine the what, why, when, and how of mosquitoes, fleas, ticks, leeches, and other parasites. Feel for heat—bloodsuckers need a hot meal! Locate CO2 in your breath that attracts mosquitoes. Find a vein in an arm, and match suckers by their mouth parts. Play the […]
Let’s create a colorful collage out of circles. Trace different-sized circles over the paper, overlapping as you go. Then, fill in each circle with its own color.
