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Teaching strategies Activity 1: Using folding to test for lines of symmetry is a hands-on activity that allows students to explore the meaning of the concept 'line of symmetry'. Activity 2: Identifying lines of symmetry is a diagnostic resource sheet that allows teachers to identify if students have misconceptions. It can also be used as a source of ideas for the range of examples that should be presented to students. Activity 3: Symmetry in the environment allows students to relate ideas about symmetry to real-world examples. Activity 4: Silly faces uses computer software to create pictures that reveal how symmetrical we are.

It turns out that for most major scientific concepts, kids come into the classroom — even in middle school — with a whole set of beliefs that are commonly at odds with what scientists, and their science teachers, know to be true

you had to explain what causes the change in seasons, could you? Surprisingly, studies have shown that as many as 95 percent of people — including most college graduates — hold the incorrect belief

If teachers are to help students change their incorrect beliefs, they first need to know what those are