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
Domain: Operations and Algebraic Thinking
Practice basic operations for young mathematicians in fun ways! Using two decks of cards (Ace through 10 plus the joker), learners play "memory" by matching numbers that can be added to make 10 and writing number sentences. In another...
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
School in the Past
School was a lot different in the past. Let your class discover what life in school would be like if they lived in the 1800's. Starting with the ring of the school bell, this presentation shows how kids learned and how they were...
Curated OER
Three-Digit Addition
Students work with hundreds place value, create and manipulate three-digit addition problems, and add three-digit numbers.
Curated OER
Food Pyramid Abacus
Students investigate the Food Pyramid by constructing a creative project known as a Food Pyramid Abacus. They correlate the color beads withe each food group and the number of recommended servings from each. The abacus is a learning tool...
Curated OER
Counting with Place Value, with the Abacus
Students study an abacus while counting marathon runners. For this place value lesson, students watch a video segment on how counters keep track of marathon runners to reinforce the idea of place value.
Curated OER
Abacus Work
In this abacus worksheet, students use abacus pictures to determine 5-digit sums. In this fill in the blank worksheet, students write eight answers.
Curated OER
Understanding: Computing
Students examine how a pebble calculator works and compare it to an abacus. After a discussion on the abacus and pebble calculator and how each works, they construct their own pebble calculators. They determine how to represent...
ICT Games
Ict Games: Abacus
This interactive abacus can be used for addition, subtraction, counting, and place value.
Math Is Fun
Math Is Fun: Definition of Abacus
You can use an abacus to count, add, subtract, multiply and more. Try this interactive abacus and see if you can make the numbers. Choose "here's more" for some clues. Good luck!
abcteach
Abcteach: Social Studies: History
[Free Registration/Login Required] A directory of history resources (games, activities, puzzles, graphics) to be used as part of elementary study of Ancient Egypt and Greece, the Middle Ages, the Revolutionary War, and other topics....
Saddleback College
Algebra2go: Addition Using an Abacus Problem Sets
This resource contains three problem set for practcing addition using Abacus worksheet. Select a problem set, then select a question. Fill in the blank with the correct answer for each problem. When you have answered all of the...
National Council of Teachers of Mathematics
Nctm: Illuminations: Electronic Abacus
This applet explores the use of an abacus model for representing numbers and for performing addition.
ClassFlow
Class Flow: Abacus
[Free Registration/Login Required] Use the move tool to slide the beads on the abacus back and forth to explain the concept of counting.
University of Cambridge
University of Cambridge: Nrich: 6 Beads
Use the diagram on this one page website to solve the problem. There are teacher notes and the solution is only a click away.
Computer History Museum
Computer History Museum: Abacus
The Computer History Museum located in Mountain View, California, provides a glimpse into the development of the information age via their large collection of artifacts. This section highlights the development and use of the abacus, "a...
Educaplus (Jesús Peñas Cano)
Educaplus: El Abaco
Learn how the abacus can be used to do simple arithmetic operations.
History of Computing Science
History of Computing Science: A Primitive Calculator
The abacus is an ancient calculating tool. This lecture series presents a brief description of the abacus and its use.
Curated OER
Science Kids: Science Images: Abacus
A photo of an abacus. Also known as a counting frame, the abacus has been an important tool for making calculations for thousands of years, and is still used in many places today. This particular example is a Russian abacus.