Hi, what do you want to do?
DiscoverE
Build a Plankton Net
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...
EngageNY
Estimating Probabilities by Collecting Data
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...
Rational Number Project
Initial Fraction Ideas Lesson 18: Overview
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...
PreKinders
Carrots for the Rabbit Play Dough Mats
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.
Curated OER
Adding: Written Questions
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."
Illustrative Mathematics
Cynthia's Perfect Punch
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...
Curated OER
Shortcuts in Addition
This PowerPoint demonstrates adding numbers to make 10s using examples of long column addition.
Curated OER
Math Shortcuts
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...
Curated OER
Number Blast Addition
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,...
Curated OER
Everyday Mathematics: Rounding
In this rounding practice worksheet, young scholars sharpen their math skills as read tips pertaining to rounding numbers and try the extra practice activities.
Curated OER
Numbered Doors
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.
Curated OER
Math Rugby Game on Addition
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.
Curated OER
Basic Math Addition of Decimals
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.
Curated OER
Addition and Subtraction Mix--Level 2 Mix
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.
Curated OER
Fibonacci Trick
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.
Curated OER
A Human Number Line
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.
Curated OER
Chisanbop (Korean Counting to 99)
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.
Curated OER
Missing Number Sum Activity
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.
Curated OER
Addition: Math 3
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.
Curated OER
Snowflake Number Investigation
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.
Curated OER
Addition: Exercise 4
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.
Curated OER
Two Owl Eyes
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.
Curated OER
Christmas Doubles Addition
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...
Curated OER
Decimal Addition
In this decimal addition worksheet, students add two to four digit numbers with decimals together. Students complete 80 problems and 16 review problems.