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Teach problem solving! The 24 lessons in this unit are designed to help students turn abstract problems into graphic, semi-concrete formats. This ability is an important step in the development of effective problem-solving techniques. Example: "Planted four rows of flowers. Six plants in each row." How many flowers? Draw a picture to show how to solve each problem. By creating a visual representation of the components of a problem, students can more easily perform necessary operations. They can also see the logic – or absence of logic – in their solutions. The sequential activities featured here will most certainly help young learners develop critical thinking skills.