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In this activity, learners see how many coins they can add to a full glass of water before the water overflows.

Learners discover that soap can be used to power a boat. Learners make a simple, flat boat model, put it in water, and then add a drop of detergent at the back of the boat.

In this activity (located on page 3 of the PDF), learners investigate the way water moves and how we can control and direct water.

In this physics activity (page 10 of the PDF), learners will explore how energy from moving water can be used.

In this activity, challenge learners to float a paper clip in a cup of water. Learners discover that a paper clip will sink in a cup of water, except when it is placed on a piece of paper towel.

In this activity, learners explore gravity and air pressure as they experiment with holding a glass full of water upside down, without spilling it, using a simple piece of cardstock.

In this activity, learners build a water squirter using a PVC pipe, dowel, and foam. This activity is great for the summer time and introduces learners to forces and water pressure.

In this activity, learners use the design thinking process to design and build their own aqueduct, or water bridge.

In this activity, learners make their own "tornado" using two soda bottles and water.

In this activity, learners will use simple materials to explore centripetal force and variables by swinging a cup of water without having the water spill out.

In this activity, learners use sieves with different-sized holes to sort balls by size.

In this activity, learners build water-propelled engines from soft drink cans.

In this activity, learners will explore the density of an object in water. Learners will compare what happens to fruits and vegetables in regular and salt water.

In this activity, learners will make fish cutouts that propel through the water with the help of surface tension.

In this activity/demonstration, learners observe what happens when two ping pong balls are suspended in the air by a hair dryer. Use this activity to demonstrate how rain drops grow by coalescence.

In this nanoscience activity, learners discover that it's easy to pour water out of a regular-sized cup, but not out of a miniature cup.

Design a vessel that tests the limits of wind power given a set of off the shelf and recycled materials.

In this activity, challenge learners to predict and investigate how many water drops they can fit on one penny.

Learners design, build, and test models of "dragon boats" made from up to three milk cartons.

Perform this classic inertia demonstration to illustrate the transfer of potential energy to kinetic energy.