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Eight tried and tested teaching ideas for geometry! With these materials, your pupils will learn to independently derive mathematical formulae that are otherwise so abstract for them by actively approaching concrete objects. Through their own experiences and thought processes, the formulae take on meaning and can be transferred much more easily to other cases and contexts. For example, it involves transforming quadrilaterals into rectangles by decomposition or addition. For each lesson, there are well-prepared introductory slides, worksheets, additional tasks, solutions, practical tips, and detailed lesson plans, allowing you to prepare your lessons with ease. In the material section, you will find conversion tables, craft instructions, and "I-can" checklists, among other resources.

From the contents:

• Rectangle and square
• Repetition of area and perimeter calculation
• Decomposition equation for quadrilaterals addressed with the Tangram puzzle
• Parallelogram: area and perimeter calculation
• Parallelogram: application of area content calculation
• Rhombus: area content and perimeter calculation
• Kite quadrilateral: area content and perimeter calculation
• General trapezium: area content and perimeter calculation
• Material part.