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Topic: Number and place value
1 and Prime Numbers - Numberphile
Why is one not a prime number – featuring Dr James Grime.
Discusses the Fundamental Theorem of Arithmetic.
Dividing using base ten blocks (animations)
Clear animations that use base ten blocks to model the process of division. There are some step-by-step explanations that can be turned off if you are presenting these animations to your class. Free.
Factor Tree
“This manipulative allows you to construct factor trees (to the prime factors) for two numbers, and then from the prime factorization, you are asked to identify the Least Common Multiple (LCM) and the Greatest Common Factor (GCF) of the two given numbers.”
Multipication using base ten blocks (animations)
A set of clear, engaging animations showing how we multiply using base ten blocks. Carrying (regrouping, trading) is also covered in depth. There are step-by-step explanations that can be turned off if you are presenting the animations to a class on the IWB or projector. Free.
Multiplication wih mathematical working (animations)
Animated explanations of the process of multiplication. Carrying (regrouping, trading) is covered and a deep understanding of place value is emphasised. The optional step-by-step explanations that can be turned off if you are presenting the animations on the IWB or projector. Free.
Short division (animations)
Animated explanations of the process of short division. Remainders and regrouping are fully covered with the emphasis on an understanding of place value. There are some optional step-by-step explanations. These can be turned off if you are presenting to a class. Free.