In this abacus instructional activity, students use abacus pictures to determine 5-digit sums. In this fill in the blank instructional activity, students write eight answers.
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Partition Into thousands, hundreds, tens and ones
An abacus may be old, but it's still a great visual tool. Young mathemeticians look at, study and analyze 8 abacus images. They look at each image to determine how many beads are in each place value. They work with thousands, hundreds,...
4th - 5th Math
Science in History Part I: the Abacus To the Modern Computer
In this math information instructional activity, learners read one page factual accounts of the early math inventions of the abacus, the calculator and early computers. There are 40 questions to answer about the reading.
5th - 6th 21st Century Skills