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In this activity (on page 2 of PDF under GPS: Roller Coaster Design Activity), learners will use food cans of many different properties (sizes, shapes, and weights) and set two cans on their sides at

In this activity, learners examine baking powder, a combination of three powders: baking soda, cream of tartar, and cornstarch.

In this activity, learners work in teams to study the observation skills essential to scientific research.

Learners conduct an experiment to determine the rate at which two materials, sand and water, heat up and cool down.

Learners manipulate opaque, sealed boxes and attempt to determine their interior structures. Each box contains a moving ball and one or more fixed barriers.

In this chemistry activity, learners are asked to form a hypothesis about the behavior of milk as household detergents act upon it.

On an imaginary fossil hunt, learners "find" (remove from envelope) paper "fossils" of some unknown creature, only a few at a time.

Learners explore the physical properties of a variety of balls and how they bounce.

In this activity about water's cohesive and adhesive properties and why water molecules are attracted to each other, learners test if objects repel or absorb water.

Learners initially test to see how many drops of liquid (water, rubbing alcohol, and vegetable oil) can fit on a penny.

In this activity (page 26 of the PDF), learners make observations, formulate hypotheses and design a controlled experiment, based on the reaction of carbon dioxide with calcium hydroxide.

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

In this lesson, learners are challenged to discover the relationship among six numbers.

Learners design their own experiment to determine which M&M color dissolves the fastest in water.

Learners use scientific processes to solve a crime. As they get clues, learners must create a hypothesis then adjust that hypothesis as more information is revealed.

This activity (on pages 15-23) combines interactive role-playing and graphing to introduce learners to the health affects of pollen.

Each learner chews a piece of gum until it loses its flavor, and then leaves the gum to dry for several days.

In this activity about water solubility and density, learners use critical thinking skills to determine why water can dissolve some things and not others.

Learners imagine they are paleontologists in Florida, where they find (remove from envelope) paper "fossils" of some unknown creature, only a few at a time.

In this multi-station lab, learners conduct a series of experiments to explore the processes and effects of weathering and erosion.