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Learners follow a three-step process to start their own rock collection.

In this simulation, learners use M&M™ candy to explore radioactive isotope decay.

In this activity, learners make a miniature greenhouse or "terrarium" to explore the greenhouse effect.

In this activity, learners work in groups to create a time line representing significant moments in their lives.

In this activity (page 1 of the PDF under SciGirls Activity: Dinosaurs), learners will model how paleontologists estimate the age of fossil discoveries by extracting “fossil” playing cards from newspa

Through discussion and hands-on experimentation, learners examine the geological (ancient) carbon cycle.

In this activity, learners identify different plastics in a mystery bag. Learners discover that plastics are classified #1 through #7.

In this activity (on pages 16-21), learners get a sense of geological time by understanding how big a million is.