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Worksheet
Curated OER

Whole Numbers

For Students 7th - 8th
In this whole numbers worksheet, students write equivalent equations.  This one-page worksheet contains 10 problems.
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Worksheet
Curated OER

Add Mixed Numbers With Like Denominators Worksheet

For Students 4th - 6th
Practice adding mixed numbers with like denominators with your upper elementary schoolers. The cartoon figure at the top of the page reminds learners how to tackle the problem. There are 14 problems listed. 
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Worksheet
Curated OER

Add Mixed Numbers With Like Denominators [C]

For Students 4th - 5th
For this mixed number addition worksheet, students solve a total of 7 problems, adding mixed numbers with like denominators. An example problem appear at the top of the worksheet.
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Worksheet
Curated OER

Add Mixed Numbers with Like Denominators (F)

For Students 4th - 6th
In this adding mixed numbers practice worksheet, students solve 14 problems that require them to add mixed numbers that have like denominators.
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Worksheet
Curated OER

Add Mixed Numbers With Like Denominators [J]

For Students 4th - 5th
In this mixed number addition instructional activity, students add a total of 14 problems, using mixed numbers with like denominators. An example problem appears at the top of the instructional activity.
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Lesson Plan
Curated OER

Comparing Apples With Apples 1

For Teachers 4th - 6th
Elementary schoolers observe and demonstrate how to add and subtract fractions with like denominators. They observe the teacher model a variety of fraction addition and subtraction problems and use fraction strips to complete a worksheet.
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Unit Plan
Curated OER

Multiplication Strategies - A Day at the Zoo

For Teachers 3rd - 4th
This is an amazing 33-page resource for teaching multiplication! Your mathematicians will discover the connection between multiplication and repeated addition. They also will work collaboratively with arrays while studying zoo animals....
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Lesson Plan
Illustrative Mathematics

$20 Dot Map

For Teachers K - 2nd Standards
Challenge the addition skills of young learners with this open-ended math problem. The task is simple, get from start to finish by connecting a series of three numbers. The trick is that the sum of the numbers must be less than or equal...
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Worksheet
Curated OER

Fractions and Rationals

For Students 5th - 8th
Upper elementary and middle schoolers solve 16 types of problems to include writing fractions to represent shaded portions, writing a mixed number to represent certain points on a number line, and changing equivalent mixed numbers to...
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Lesson Plan
Curated OER

Fractions of A Pizza

For Teachers 3rd - 5th
Learners view a large illustration of a pizza with parts of velcro.  In this addition and subtraction of fractions lesson, students solve problems based on the pieces missing from the pizza. Learners take a fraction quiz. Order a fresh,...
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Lesson Plan
EngageNY

Matrix Addition Is Commutative

For Teachers 11th - 12th Standards
Explore properties of addition as they relate to matrices. Using graphical representations of vector matrices, scholars test the commutative and associative properties of addition. They determine if the properties are consistent for...
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Worksheet
Curated OER

Whole Number Addition Level 4

For Students 2nd - 3rd
In this math learning exercise, students solve twelve whole number addition problems. Students add two-digit numbers without carrying.
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Worksheet
Curated OER

More Addition

For Students 4th - 5th
Turn your mathematicians into addition superstars with these multiple-addend equations. They add up three, four, and five-digit numbers to find the sums, a few of which are six-digit numbers. The twelve vertically aligned equations...
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Lesson Plan
Curated OER

Part Part Whole

For Teachers 1st
First graders solve number sentences. In this problem solving lesson, 1st graders construct addition sentences using a part part whole mat. Students demonstrate problem solving strategies using cubes.
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Worksheet
Curated OER

Whole Number Addition Level 9

For Students 2nd - 3rd
In this math worksheet, students solve twelve addition problems using 3 digit whole numbers.
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Lesson Plan
Curated OER

Two-Digit Addition at the Zoo

For Teachers 2nd
Your second graders explore two digit addition with regrouping. They will investigate problem solving strategies within the context of a trip to the zoo. Multiple resources and assessments are provided.
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Lesson Plan
Illustrative Mathematics

Field Day Scarcity

For Teachers K - 2nd Standards
Introduce young mathematicians to concepts of financial literacy with this open-ended word problem. With seven dollars to spend during field day and given a list of available items and their prices, children must determine how they want...
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Worksheet
Curated OER

Compare Numbers to 1,000

For Students 3rd - 4th
In this elementary math worksheet, students write the symbols for greater than, less than, or equal to in the box between three digit numbers. They complete 100 problems.
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Worksheet
Curated OER

Count on Whole Tens

For Students 3rd - 4th
In this counting worksheet, students complete a set of 5 problems, adding a "whole ten" number to a 3-digit number, then complete 6 additional problems, adding 90 to given numbers.
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Interactive
Curated OER

Concept: Adding Integers

For Teachers 4th - 6th
In this integers online interactive worksheet, students complete a chart on adding integers and rewrite 11 positive integer questions without the positive signs. Students solve 2 online integer word problems on the lines provided.
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Lesson Plan
Curated OER

Dance, Dance, Dance

For Teachers K - 2nd
Use dance and song to help your charges in adding whole numbers to 10. In this adding to 10 instructional activity, learners become the manipulatives as you add them.
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Assessment
1
1
California Education Partners

John's Trip Disneyland

For Students 5th Standards
It all adds up to one. Pupils solve several items that involve finding sums of fractions in relationship to a whole. The assessment task uses fractions with unlike denominators to determine the amount of a tank of gas and the amount of...
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Worksheet
Maths Blog

Adding/Subtracting Whole Numbers in Your Head

For Students 2nd - 3rd Standards
Exercise those mental math muscles! This worksheet contains 10 addition and 10 subtraction problems which require learners to compute sums or differences in their heads. A quick review at the top of the page provides a strategy based on...
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Interactive
Cold Spring Harbor Laboratory

A Half DNA Ladder Is a Template for Copying the Whole

For Students 9th - 12th Standards
The experiment known as one of the most beautiful experiments in biology changed the way we think about DNA. Learn about the experiment and the scientists who designed it—as well as the scientists who built on the results—with an online...