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In this activity, explore chromatography and the various colors that make up the ink in markers. Use this activity to investigate cohesion and adhesion.

In this physics crime lab or demonstration, learners pretend they are criminologists and must find the "muzzle velocity" (speed of the bullet as it leaves the gun) of a gun used to commit a crime.

With a coffee filter, a black marker, and a cup of water, discover the secret colors hidden in black ink.

In this activity, learners combine two substances (plaster of Paris and water) to make a cast of an object's imprint in clay.

In this experiment, learners separate different types of molecules in marker inks (using a technique called "thin layer chromatography").

In this chemistry activity, learners use thin layer chromatography to determine the molecular composition of different markers.