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A building system that uses simple components, The rear fin steers the blades into the wind Power with a small fan or take outside Demonstrates key science and technology topics 5 - 12 years, TechCard™ is a building system that uses simple components that are easy to cut, stick and colour to build into an endless range of working models and is a fantastic way to make learning memorable and fun. The TechCard™ Windmill is a simple working windmill that turns to face the wind as the sails rotate.
