Curated OER
The Abacus
The class reads an explanation of the how the ancient calculation tool, the abacus, works. They examine four abacus images and record the number shown on each of them.
Curated OER
A Model for Tens and Ones: Reading an Abacus
Interpreting pictures of an abacus, learners write 2-digit numbers. They read and transcribe abacus beads in the tens and ones places. For extension, they draw pictures to represent the numbers 9 and 90. Really bring it to life using a...
Curated OER
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,...
Curated OER
Science in History Part I: the Abacus To the Modern Computer
In this math information activity, students 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.
Curated OER
Quiz: Simple Picture Multiplication
In this picture multiplication worksheet, students solve four picture multiplication problems and six one-digit times one-digit problems.