Activity
DiscoverE

Build a Plankton Net

For Teachers 6th - 12th
Give household materials new life by turning them into a plankton net. Scholars design and build a net to collect and filter plankton from water. They test out their creations by using glitter to represent plankton. The nets need to...
Lesson Plan
EngageNY

Estimating Probabilities by Collecting Data

For Teachers 7th Standards
Take a spin to determine experimental probability. Small groups spin a spinner and keep track of the sums of the spins and calculate the resulting probabilities. Pupils use simulated frequencies to practice finding other probabilities to...
Lesson Plan
Rational Number Project

Initial Fraction Ideas Lesson 18: Overview

For Teachers 3rd - 6th Standards
Develop young mathematicians' ability to compare fractions with investigation into the number 1/2. After brainstorming a list of fractions equivalent to 1/2, children identify a pattern in the numerators and...
Printables
PreKinders

Carrots for the Rabbit Play Dough Mats

For Teachers Pre-K - K
Feed the hungry rabbit with a play dough activity. Kids view the numbers at the top of each page, then create the correct number of play dough carrots and add them to the mat.
Worksheet
Curated OER

Adding: Written Questions

For Students 2nd - 3rd
Sometimes, written addition problems can confuse students. In this addition worksheet, students find sums for 10 written questions such as: "Find the sum of 30 and 50."
Lesson Plan
Illustrative Mathematics

Cynthia's Perfect Punch

For Teachers 3rd - 5th Standards
Using a real-world example, this problem illustrates the thought process that learners need to engage in to understand adding mixed numbers with common denominators. First by looking at estimation, and then by drawing models that...
PPT
Curated OER

Shortcuts in Addition

For Teachers 3rd
This PowerPoint demonstrates adding numbers to make 10s using examples of long column addition.
Lesson Plan
Curated OER

Math Shortcuts

For Teachers 3rd - 7th
Looking for a different way to introduce long division? Need a shortcut for checking multiplication answers? Then this is for you! The multiplication method uses a quick trick to check for accuracy. The division method allows learners to...
PPT
Curated OER

Number Blast Addition

For Teachers 1st - 3rd
A quick and easy way to get kids ready for math, is with a warm-up activity. Here, they are presented with a series of 10 numbers, as the slides progress they add each number together, resulting in a single answer. A wonderful warm-up,...
Lesson Plan
Curated OER

Everyday Mathematics: Rounding

For Teachers 3rd - 4th
In this rounding practice worksheet, young scholars sharpen their math skills as read tips pertaining to rounding numbers and try the extra practice activities.
Interactive
Curated OER

Numbered Doors

For Students 5th - 8th
In this numbered doors worksheet, learners solve a problem where they find the least expensive way to put metal numbers on doors that all have a certain value. Students complete 1 problem.
Worksheet
Curated OER

Math Rugby Game on Addition

For Students 2nd - 4th
In this addition instructional activity, students add one and two digit numbers together and then match them to their answers in the rugby balls. Students complete 10 problems.
Worksheet
Curated OER

Basic Math Addition of Decimals

For Students 2nd - 3rd
In this decimal addition activity, students complete a set of 10 problems adding decimal numbers to the tenths place. Page has multiple links to additional resources.
Worksheet
Curated OER

Addition and Subtraction Mix--Level 2 Mix

For Students 2nd
Simple addition and subtraction is the focus of this instructional activity which has students solve 100 addition problems and 100 subtraction problems involving single and double digit numbers.
Worksheet
Curated OER

Fibonacci Trick

For Students 9th - Higher Ed
In this algebra worksheet, students solve a puzzle starting with two single digit numbers and eventually conclude that the answer can be used with Fibonacci's pattern. There are 11 steps to the puzzle with a provided answer.
Lesson Plan
Curated OER

A Human Number Line

For Teachers 8th
Eighth graders act out a number line using integers -10 to 10 on large cards. They practice addition and subtraction of these integers to gain explain the relative size of numbers.
Lesson Plan
Curated OER

Chisanbop (Korean Counting to 99)

For Teachers 1st - 3rd
Students practice their counting skills. In this counting lesson, students discover the Chisanbop method of counting which allows them to quickly count to 99 using their hands.
Worksheet
Curated OER

Missing Number Sum Activity

For Students 1st - 3rd
In this missing number instructional activity, students fill in missing addends to reach the sum of 19, 8 problems total, then answer additional related questions.
Worksheet
Curated OER

Addition: Math 3

For Students 3rd - 4th
In this addition worksheet, learners add one digit numbers to two digit numbers. There are thirty questions to answer. Students can complete this online and submit the answers.
Worksheet
Curated OER

Snowflake Number Investigation

For Students K - 1st
In this number sentences worksheet, students use the four numbers in snowflakes to write six addition sentences. Students do the same with four other numbers, this time writing and solving subtraction problems. All numbers are below 10.
Worksheet
Curated OER

Addition: Exercise 4

For Students 2nd - 4th
In this addition worksheet, students add one digit to two digit numbers without having to carry over. There are thirty problems. Students can complete this online and submit the answers.
Lesson Plan
Curated OER

Two Owl Eyes

For Teachers 1st
First graders listen to the story, Olivia Counts, and demonstrate counting to ten. They make predictions, and recognize the day and night sky. They add page number 2 to their counting books.
Worksheet
Curated OER

Christmas Doubles Addition

For Students K - 1st
In this Christmas addition instructional activity, students use models to identify the sum. Pictures of numbers include reindeer, candy canes, stockings, and angels. All addition problems are doubles ranging from doubling one to doubling...
Worksheet
Curated OER

Decimal Addition

For Students 5th - 8th
In this decimal addition worksheet, students add two to four digit numbers with decimals together. Students complete 80 problems and 16 review problems.

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