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30 dní na vrácení zboží
This collection of activities is based on a weekly series of space science problems distributed to thousands of teachers during the 2010-2011 school year. The problems were intended for students looking for additional challenges in the mathematics and physical science curriculum. The problems deal with modern science and engineering issues, often involving actual research data. Each word problem includes background information. One-page teachers' answer keys accompany the one-page assignments.