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In this activity about the baroreceptor reflex (BR) arc (page 123 of the PDF), learners discover the importance of maintaining adequate arterial blood pressure through a role playing exercise.

Learners set up books with rubber bands stretched between the books. When two identical books are stretched apart and released, they move back toward each other an equal distance.

In this activity, learners work with an adult to build a rocket and launcher out of a plastic 2-liter bottle, flexible plastic hose, plastic tubing, toilet paper tube, and duct tape.

In this design challenge, learners will create wind-powered contraptions to transport a load, such as a cupcake or another small object, and test to see if they work.

Learners observe projectile motion by launching wooden balls off of a table top. They set up a rubber-band launcher so that each ball experiences a consistent amount of force.

In this activity, learners discover that some things only stand up while they are spinning.

In this activity, learners discover how to determine the distance to a lightning strike or nearby thunderstorm.

This lab activity has learners create a pendulum with a one-second period.

Learners trace, cut out and fly a boomerang, outdoors or in a large indoor space.

In this team design challenge (page 19-24 of PDF), learners "land" a model Lunar Rover in a model Landing Pod (both previously built in activities #3 and #4 in PDF).

In this activity (located on pages 23-24 of the PDF), learners are introduced to structural engineering and encouraged to practice goal-oriented building.

In this activity, learners will design a protective package for an egg that will allow the egg to withstand a fall without cracking.

In this activity, learners will explore pendulum motion through scientific trials by using household items with different length strings.

In this activity, learners investigate how inkjet printers produce tiny, precise drops of ink.

In this activity, learners determine the shape of an unseen object by bouncing a ball off the object.

In this activity, learners are challenged to design and construct a windmill to harness the power of wind.

Learners cut and fold a paper helicopter from the template in this PDF. They practice twirling the helicopter and observe what happens as they modify their tries.

The goal of this activity is to design, build and test a house or toy for an animal.

Engineer and cartoonist Rube Goldberg is famous for his crazy machines that accomplish everyday tasks in overly complicated ways.

The "Rocket Reactions" activity is an exciting way to learn about how materials interact, behave, and change.