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Queen's Printer for Ontario

E workshop.on.ca: Effective Instr'n in Math, K 6: Multidigit Computation [Pdf]

For Teachers Pre-K - 1st Standards
Volume 5 in an eworkshop Guide to Effective Instruction in Math outlines and illustrates instructional strategies for teach basic facts and multidigit computation to students in kindergarten through grade 6.
Activity
Teaching Treasures Publications

Teaching Treasures: Year Five Math (Page 2)

For Students 3rd - 8th Standards
Use this interactive worksheet for practice or assessment of basic computation skills. Problems covering all four operations are included such as four-digit addition and subtraction and multiplication and division facts through twelve...
Unit Plan
Lawrence Hall of Science

The Math Page: Skill in Arithmetic: The Meaning of Decimals

For Students 3rd - 5th Standards
This website from The Math Page explains and defines decimals.
Activity
Texas Instruments

Texas Instruments: Number and Operation Sense: Whole Numbers

For Teachers Pre-K - 1st Standards
In this activity, students attain a basic understanding of numbers and number operations, developing number sense, and gaining fluency in arithmetic computation. They also learn to use the calculator to explore the mathematical...
Activity
Texas Instruments

Texas Instruments: Mad Minutes

For Teachers 9th - 10th
This activity should help kids to perform quick computations using mental math, become less reliant on calculators for computation, and remember algorithms for common math problems by using repetition and practice.
Website
Other

Mathematics Computation

For Teachers 3rd - 8th
This site gives you math worksheets to save the teacher time and keep the students learning.
Activity
National Council of Teachers of Mathematics

Ntcm: Math Challenge: Perplexing Percentages

For Students 3rd - 8th
Test your bargin shopping skills by figuring out which discount offers the greatest savings. A one page activity from the NCTM Math Challenges for Families series that focuses on understanding and calculating percentages. Connections...
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Lawrence Hall of Science

The Math Page: Skill in Arithmetic: Elementary Addition

For Students Pre-K - 1st Standards
This resource offers six brief arithmetic lessons: sums less than ten, sums of ten, and sums between ten and twenty, doubling, zero, and a set of general practice problems.
Activity
National Council of Teachers of Mathematics

Nctm: Figure This: How Much Time Do Teens Spend on the Job?

For Students 3rd - 8th
Try this math challenge where you investigate the average number of hours teen actually spend working. Apply your problem solving, number sense, and computation skills in this one page activity from the NCTM Math Challenges for Families...
Activity
Teaching Treasures Publications

Teaching Treasures: Year Two Math (Page 1)

For Students Pre-K - 1st Standards
Improve your computation skills using this interactive worksheet. Review two digit addition and subtraction facts. This worksheet gives students immediate feedback and is a suitable tool for short assessments or independent practice.
Activity
Scholastic

Scholastic: Math Maven's Mysteries: The Case of the Hatcher Hotel Heist

For Students K - 1st Standards
Help Math Maven solve this mystery! Items are missing from several hotel rooms, but some addition and subtraction clues have been left behind. Use your skills to figure out where the thief will strike next!
Lesson Plan
Google

Google for Education: Data Aggregation and Decomposition (Excel)

For Teachers 9th - 10th
By using Microsoft Excel, students collect, decompose, and re-aggregate class data. Students use computational thinking skills by decomposing long lists of information and writing basic algorithms to help analyze data.
Interactive
ABCya

Ab Cya: Addition With Manipulatives

For Students Pre-K - 1st Standards
An interactive addition game that includes movable manipulatives. An engaging tool for building skills with one and two digit addition facts. Immediate feedback given.
Interactive
Quia

Quia: Story Problems With Mixed Practice

For Students 3rd - 8th
Your problem-solving skills are put to the test in this interactive word problem game on this site. Employ a variety of mathematical skills and strategies including logical reasoning and computation. Multiple choice problems created for...
Website
Learning Wave Communications

Learning Wave: Decimals

For Students 5th - 8th Standards
This resource contains several links that lead to discussions on several topics of decimals, including converting and comparing with fractions, rounding, estimating, and basic operations. Each page includes examples and some sample...
Activity
Math Slice

Math Slice: Math Crossword Slice Special Test

For Students Pre-K - 1st Standards
Use this interactive math crossword puzzle to build number sense skills. Simply fill in the missing numbers based on the operation. Immediate feedback given to responses.
Article
PBS

Pbs Kids Design Squad: Take a Look

For Students 3rd - 8th
See how a new mobile phone technology is helping people receive basic eye exams.
Lesson Plan
Curated OER

Google for Education: Presentations on Cs and Technology for Young Children

For Teachers Pre-K - 1st
Teach young children the basics of computer science and computational thinking skills through this collection of ready to use presentations aimed to engage young learners.
Interactive
NumberNut

Number Nut: Carrying Like Addition

For Students 3rd - 5th Standards
Use what you already know about addition to master this skill in multiplication. This lesson reviews the concept of carrying in multiplication. Detailed examples are provided along with interactive games to practice the skills learned....
Activity
NumberNut

Number Nut: More Than Two Addends

For Students 3rd - 5th
Develop strategies for adding more than two addends with this quick addition lesson. Examine how grouping numbers can help make adding multiple numbers easier. Then, practice your new skills using the related interactive games that are...
Interactive
NumberNut

Number Nut: Multiplying More Than Two Factors

For Students 3rd - 8th Standards
Multiplying by more than one factor can be easy when you break the numbers down. Learn this problem solving strategy and others in this short lesson that demonstrates how to multiply with several factors. This lesson includes specific...
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Other

Project Happy Child: Free Addition Worksheets

For Students Pre-K - 1st Standards
2000 basic addition worksheets are available at this web site. They can be printed and used for a variety of practice purposes. Some helpful hints are included to avoid mindless practice that could quickly become counter productive.
Activity
University of Cambridge

University of Cambridge: Nrich: Sealed Solution

For Students Pre-K - 1st Standards
On this one page website sharpen your logic and addition facts skills while working on this challenge. The solution is available to double check your solution.
Interactive
University of Cambridge

University of Cambridge: Nrich: Game Criss Cross Quiz

For Students 1st - 5th Standards
Use this online game to improve your subtraction or addition skills while you play on a coordinate plane gameboard. Gain skills in two areas at the same time! This game can also be altered to practice multiplication facts. There is a...