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In this activity, learners will create beautiful greeting cards by marbling with shaving cream and food dye. They will explore the chemistry behind the art of marbling.

In this activity, learners will use chemistry to create a night sky watercolor painting. They will experiment to learn the effects of mixing crayon, salt, and lemon juice with water color paints.

In this activity (page 6 of the PDF), learners will observe both a chemical and a physical change.

In this biology activity (page 5 of the PDF), learners use yarn and sticky labels to build a model of a DNA strand. They discover that DNA is very long, very skinny, and packs well into cells.

This is an online game about the complexities of farming. Learners will "draw" cards and make decisions about how to take care of their farm.

In this hands-on activity, learners use an assortment of (mainly household) items to complete Rube Goldberg-type challenges.