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CK-12 Foundation
Prime Factorization: Chocolate Chip Factoring
An interactive resource challenges mathematicians to show what they know about prime factorization. Five multiple-choice, true or false, and discussion questions use chocolate chip cookies to set a real-world application of the...
CK-12 Foundation
Whole Number Exponents: Building Blocks
Five questions make up an interactive all about whole-number exponents. Movable building blocks create a visual tool to aide mathematicians in answering multiple-choice and true or false problems. The interactive ends with a discussion...
CK-12 Foundation
Order Real Numbers: Pie Baking Contest
Time is on your side. Scholars plot three points on number lines with different time units to represent the time it takes three people to bake pies. They determine the fastest baker and the difference in times between the bakers.
CK-12 Foundation
Division of Decimals by Whole Numbers: Lemonade Stand
After a full day of selling lemonade, three friends split the cost of the profit money. If the total profit was $34.20, how much will each friend get?
CK-12 Foundation
Whole Number Exponents: Teddy Bear Box
Five questions—multiple-choice, fill in the blank, and discussion—make up an interactive that challenges scholars to mail a teddy bear using the smallest box possible without squishing it. A box with movable sides allows mathematicians...
CK-12 Foundation
Add and Subtract Three Mixed Numbers: Walking to School
Mixed numbers are the focus of a five-question interactive. Scholars move fraction pieces into strips and equations to find solutions. Questions challenge participants with multiple-choice, a true or false, and one discussion.
Curated OER
Subtracting Mixed Numbers
In this math worksheet, students subtract mixed numbers. Students find common denominators. They subtract the fractions and whole numbers.
CK-12 Foundation
Whole Number Multiplication: Multiplication Map
How many miles did a car travel if it traveled at 55mph for three hours? What are the factors for this multiplication sentence? These are the questions young mathematicians must solve using a multiplication map.
CK-12 Foundation
Vector Multiplied by a Scalar: Boat Race
Find the right number of vectors to get to the finish line. Using a boat race scenario, pupils add multiples of the same vector together. The scholars use scalar multiplication to speed up the boats in an exciting race to the finish.
CK-12 Foundation
Estimation to Check Decimal Multiplication: Watering a Garden
Mathematicians solve six multiple-choice and true or false questions using their knowledge of estimation and multiplying decimals. The interactive provides a garden-themed tool that creates a visual aid of three watering cans to assist...
CK-12 Foundation
Expression Evaluation with Different Denominators: Adding Mixed Fractions of Water
An interactive challenges mathematicians to add mixed fractions with unlike denominators. Five questions—fill-in-the-blank and multiple-choice—build from one to the next leading the way to an open discussion about denominators and...
CK-12 Foundation
Expected Value: Game of Chance
Determine whether the payoff is worth it. Pupils calculate the expected value of a game with three different payoff levels. Each level has a different probability of winning money. The scholars find the expected payoffs for each...
Curated OER
Multiplying Fractions
In this general mathematics worksheet, students multiply fractions, including whole numbers and mixed numbers. The one page interactive worksheet contains five problems. Solutions and answers are provided.
Curated OER
Explorit's Do-It-In-Your-Head Numbers Quiz
In this mental math worksheet, learners complete a 6 question multiple choice online interactive activity without using pencil, paper or calculator. Included are word problems, multiple operations, averaging, and basic arithmetic.
American Museum of Natural History
What's This? Breathing
Crazy fact: Some animals can survive months without oxygen. An online resource describes some unique ways animals collect oxygen and even live without it for an extended time. Learners read about these special animals and use pop-up...
Curated OER
Adding Fractions: like denominators
In this adding fractions activity, students add fractions with like denominators together. Students complete 6 problems total on this activity.
Curated OER
Adding and Subtracting Fractions
In this adding and subtracting fractions learning exercise, students add and subtract fractions with common denominators. Students complete 10 problems total.
Curated OER
Addition with Regrouping
In this online interactive addition with regrouping worksheet, students solve 18 problems that require them to add 3 digit numbers to 3 digit numbers with regrouping.
Curated OER
My Test Book: Addition and Subtraction
In this online interactive math skills instructional activity, learners solve 10 multiple choice math problems regarding addition and subtraction of 2-digit numbers. Students may view the correct answers.
Curated OER
Adding Integers
In this integer instructional activity, students solve 12 problems, adding integers. Answers and hints are available on-line; a reference web site for additional resources is given.
Curated OER
Number Words: Thousands
In this number words: thousands activity, 4th graders interactively enter the number words for 10 numerals in the thousands, with immediate online feedback.