Curated OER
Dividing with Fractions
Use paper strips or models to relate division problems to division of fraction problems. Since the materials can be broken up, it helps them to show how they can complete repeated subtraction with fractions and not just whole numbers.
CK-12 Foundation
Addition and Multiplication Properties with Real Numbers: The Secret of Subtraction
An interactive boosts mathematicians' knowledge of subtracting integers using a horizontal number line by way of multiple-choice, true or false, and discussion questions.
EngageNY
Comparing Methods—Long Division, Again?
Remember long division from fifth grade? Use the same algorithm to divide polynomials. Learners develop a strategy for dividing polynomials using what they remember from dividing whole numbers.
Curated OER
Pattern Puzzles
A short video introduces place value in addition and subtraction. As a class, your students identify all even numbers up to one hundred and explain the pattern. They use addition strategies to fill in the missing numbers on the number grid.
National Security Agency
Introducing Integers and Their Operations
There's nothing negative about this mini-unit on integers! Engaging young mathematicians in a series of hands-on activities and collaborative learning opportunities, this resource offers an excellent way to introduce your class...
Curated OER
Playing the Cards of Place Value
Third graders explore place value to the ten-thousands place. In this amazing, 21-page place value lesson, learners represent numbers in standard and expanded form, and use technology to represent numbers to 9,999.
Curated OER
Area Model of Multiplication Using Base 10 Manipulatives
Explore two-digit multiplication with your class as they work in groups to build models of two-digit multiplication using base 10 manipulatives. They construct rectangles replacing standard numbers with equivalent place values using...
K-5 Math Teaching Resources
Base Ten Cards (tens and ones)
Strengthen your class's understanding of place value with this series of base-ten flash cards. Including illustrations representing a variety of numbers from 13 to 94, this resource can be used in many different ways...
Curated OER
Add Mixed Numbers With Like Denominators (B)
In this adding mixed numbers worksheet, students add whole numbers and fractions with common denominators. Students solve sixteen problems.
Curated OER
Add Mixed Numbers With Like Denominators (G)
In this adding mixed numbers activity, students find the sums of whole numbers and fractions with common denominators and reduce and rename the answers. Students solve 7 problems.
Curated OER
The Numbers Get Larger
Second graders examine how to use mental strategies for addition and subtraction. They look at part/whole strategies for multi-digit problems and define which one would be best used for a particular problem. They use tens frames to solve...
Curated OER
Count on Whole Hundreds: Addition
In this addition/counting worksheet, students add a "whole hundred" to another 3-digit number, then add 800 to a set of numbers. Answers are included on page 2.
Curated OER
The Divider (whole number remainders)
Third graders use the lesson to support division of whole numbers where there is either no remainder or whole number remainders. They are able to
slit division problems into parts using known multiplication and division facts.
Curated OER
Add Whole Numbers
In this addition practice worksheet, students practice their math skills as they solve 21 addition problems that require them to add 3 digit numbers, 4 digit numbers, and money. Students also answer 2 test prep questions.
Curated OER
MathKeys Software "Unlocking Whole Numbers, Vol. 11(Place Value for Four Digit Numbers)"
Third graders explore the place values of four digit numbers by writing four digit numbers and examining the effects of rearranging the numbers' digits. They practice making their four digit number with base-ten blocks then rearrange the...
Curated OER
Smart Archer
In this addition worksheet, 7th graders use numbers on each target and the given number of "arrows" to reach the target score. 8 targets are included on the page.
Curated OER
Addition Worksheet #8
In this addition worksheet, students problem solve and calculate the answers to thirty mathematical addition equations. Students show each step of their work.
Curated OER
Exploring Peano's Axioms
Students add natural numbers in axioms to prove addition theorems. In this axiom lesson plan, students add 3 + 4 to make the number 7.
Curated OER
ADDING ON THE NUMBER LINE ACCENTUATING THE NEGATIVE
Seventh graders solve problems involving addition of positive and accentuating negative integers. In this adding real numbers lesson, 7th graders draw a number line on chart paper, complete a working sheet and use the Learning Gizmo...
Curated OER
Number Up
Students explore the concept of order of operations. In this order of operations lesson, students play a card game where students in the group have 5 cards. Students must use addition, subtraction, multiplication, and division to make...
Curated OER
Ordering
Although there isn't much to this number ordering activity, it offers some solid practice in sequencing two and three-digit numbers. For each of the 20 sets of four numbers, learners re-write them in order from least to greatest. All...
Math Mammoth
Adding Fractions And Mixed Numbers 1
In this mathematics activity, 4th graders add the fractions and shade the parts illustrated in each picture. Then they write the whole numbers from 0 to 5 under the bolded black lines. Students also add and give their answer as a mixed...
Teach Engineering
Nanotechnology as a Whole
It's a small (nanotechnology) world after all! The first segment of a six-part series gives an overview of nanotechnology, its principles and applications, and shares some of the engineering applications of nanotechnology. A...