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CK-12 Foundation

Ck 12: Elem Math: Mixed Problems in Fractions

For Students 4th - 5th Standards
[Free Registration/Login may be required to access all resource tools.] A practice quiz where students solve a variety of problems involving fractions and mixed numbers.
Professional Doc
Queen's Printer for Ontario

E workshop.on.ca: Effective Instruction in Math, 4 6: Big Ideas [Pdf]

For Teachers 3rd - 8th Standards
Volume 1 in an eworkshop Guide to Effective Instruction in Math outlines and illustrates instructional strategies for explaining five big ideas of number sense and numeration to students in grades 4 through 6: quantity, operational...
Activity
Scholastic

Scholastic: Max's Math Adventures: Card Castle Addition

For Teachers 3rd - 5th
Use this site to see how Max and Ruthie built a castle inside Max's room! Teachers will want to look through the extra challenges and the teacher's guide to help with creating engaging lesson plans.
Activity
University of Cambridge

University of Cambridge: Nrich: Round and Round the Circle

For Students 3rd - 8th Standards
Learn multiplication with this dial star exercise. Predict what shapes you will get with different numbers.
Interactive
AAA Math

Aaa Math: Adding Seven Digit Numbers

For Students 3rd - 5th
This lesson is provided for by J. Banfill at AAAMath.com. Look over an example of adding seven digit numbers and then play this online game for practice. The game will keep track of your correct and incorrect answers, as well as give you...
Activity
Lawrence Hall of Science

The Math Page: Skill in Arithmetic: The Multiplication Table

For Students 3rd - 5th
This multiplication table has multiplication facts through 9 X 9 and also lets students practice them.
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.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: Using Operations and Parentheses

For Teachers 4th - 8th Standards
The purpose of this task is to give students a chance to work creatively with three of the four fundamental arithmetic operations (addition, subtraction, and multiplication). It is well suited for helping students develop fluency with...
Activity
National Council of Teachers of Mathematics

The Math Forum: Beat the Calculator: Adding Even Numbers

For Students 4th - 6th Standards
Can you beat the calculator? Your task is to find the sum of all even numbers between two and any selected two-digit even number. If you can find the number pattern, you are sure to beat the calculator every time. Links to other "Beat...
Unknown Type
Math Slice

Math Slice: Sundee Slice Special Test

For Students 3rd - 8th Standards
A concise tool for assessing a variety of math concepts including measurement, algebra, number sense, and data. Assessment is scored online immediately. An excellent tool for quick assessment.
Activity
Other

Welcome to mr.r's World of Math!!!

For Students 3rd - 5th Standards
At this site, math word problems are presented in an exciting and creative format. Students attempt to find solutions to hilarious situations using their mathematical skills. To do this they must solve various math problems in a certain...
Activity
The Math League

The Math League: Whole Numbers & Basic Properties

For Students 3rd - 8th Standards
Here is a nice resource for students and teachers about whole numbers and their basic properties. It provides links to information on place value, expanded form, and rounding numbers are just a few of the topics on this page.
Activity
Scholastic

Scholastic: Max's Math Adventures: Good Bye Training Wheels!

For Teachers 3rd - 5th
Take a bike ride with Max and add up the miles he has traveled. Use the teacher's guide, activity sheet, and extra challenges to create an engaging learning experience!
Activity
National Council of Teachers of Mathematics

The Math Forum: Beat the Calculator!

For Students 3rd - 8th
Find more than 500 "mental calculation tricks" that will help you square numbers, add, multiply divide, subtract, and find percentages. A great resource for advance math students, gifted children, and teachers wanting to find ideas for...
Unit Plan
Khan Academy

Khan Academy: Multiply 2 , 3 , and 4 Digits by 1 Digit With Area Models

For Students 3rd - 5th Standards
Use an area model to decompose the larger factor and multiply. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Activity
Annenberg Foundation

Annenberg Learner: Patterns in Mathematics: Mystery Operations

For Students 3rd - 8th Standards
This interactive activity allows you to change an equation's numbers in an attempt to figure out what operations are being used to control the answers.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Mixed Operations Addition and Subtraction I Word Problems

For Students 2nd - 4th Standards
[Free Registration/Login may be required to access all resource tools.] The video shows how to solve a word problem with addition and subtraction of two-digit numbers. The video is followed by a series of practice questions to assess...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Mixed Operations Selecting the Correct Sentence

For Students 2nd - 4th Standards
[Free Registration/Login may be required to access all resource tools.] The video shows how to add and subtract three digit numbers to determine which number sentence matches the correct solution. The video is followed by a series of...
Unit Plan
PBS

Pbs: Dividing a Whole Number by a Unit Fraction

For Students 3rd - 5th Standards
Explore division by modeling problems and grouping with manipulatives. This video focuses on dividing whole numbers by unit fractions and modeling the problems with unit blocks.
Unit Plan
Khan Academy

Khan Academy: Multiply and Divide Decimals by 10

For Students 4th - 6th Standards
Practice multiplying and dividing decimal numbers by 10. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Interactive
National Council of Teachers of Mathematics

Nctm: Factor Game

For Students 3rd - 8th
Fun math game tests your factoring ability.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Compare With Multi Step Addition and Subtraction Word Problems

For Students 2nd - 4th Standards
[Free Registration/Login may be required to access all resource tools.] The video shows how to compare numbers in a word problem using multiple operations to find given values and the solutions to the questions posed in the problem. The...
Study Guide
Other

Ohio Department of Education: Fifth Grade Achievement Test (Practice Test) [Pdf]

For Students 4th - 6th
Half-length practice test for the third grade OAT (Ohio Achievement Test). The test includes 17 multiple-choice and 3 open-response question dealing with topics such as measurement (unit conversion, time), geometry (volume, area), data...
Lesson Plan
George Mason University

Lesson Plans: Whole Number Algorithms Base Ten Blocks

For Teachers 3rd - 8th Standards
Brief lesson plans that show how to use base ten blocks to do all four operations and a little bit of algebra.