Curated OER
Add and Subtract within 20
The sums and differences only reach 20 in this arithmetic worksheet. Scholars answer 10 simple number sentences, some involving two numbers and others with three. They choose the correct answer from a list on the right. There are the...
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Make it Easier-- Add, then Take
In this math worksheet, students learn a mental math strategy in addition called compensation. When adding a number such as 29, students learn to add 30, then take 1 away. Students solve 25 problems in which they round to the nearest...
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7th Grade Math: Algebra (Distributive Property)
With algebra tiles in hand 7th graders will uncover the wonders of the distributive property of multiplication. They will take a pre-test, define the distributive property, then model and practice using their tiles to solve basic...
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Using Guess, Check and Revise
Students answer coin related math questions using the guess, check and revise process for problem solving.
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Social Studies: Global Women and Poverty
Students conduct research and make comparisons about various global economies. Create graphic organizers to present their research findings and illustrate solutions to problems. Students discuss and debate issues based on what they have...
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Using 10 to Subtract
In this using ten to subtract worksheet, students, with a partner, problem solve and calculate together the answers to five subtraction word problems.
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Building Big Ideas in Math With a Frog Theme
In this problem solving worksheet about frogs, students complete two pages of activities. Students figure out how a frog can hop between lily pads following the rules given. Students draw all possible paths.
Inside Mathematics
Hexagons
Scholars find a pattern from a geometric sequence and write the formula for extending it. The worksheet includes a table to complete plus four analysis questions. It concludes with instructional implications for the teacher.
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Addition - Counting On
Second graders solve addition problems without using a calculator. In this addition lesson, 2nd graders solve addition problems by "counting on." Students are taught this specific strategy and given the opportunity to practice.
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The Number Tool Box
In this solving a math terms crossword puzzle worksheet, students read the clues across and down and write the math terms in the blanks. Students write 19 answers.
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Add & Subtract Fractions w/Unlike Denominators, 2
Learners use several examples to create a method for adding and subtracting fractions with unlike denominators. They present these methods to the class and then practice applying methods to sample problems.
Mathematics Vision Project
Module 5: Modeling with Geometry
Solids come in many shapes and sizes. Using geometry, scholars create two-dimensional cross-sections of various three-dimensional objects. They develop the lesson further by finding the volume of solids. The module then shifts...
Smithsonian Institution
Dia de los Muertos: Honoring our Ancestors Through Community Celebration
Oral storytelling has been an important part of every culture. The time-honored practice uses stories as a conduit for a culture's values and customs from one generation to the next. Keep the tradition going with a family interview...
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Math: O.R.E.O. Woes
In this math activity, 3rd graders apply basic operations to answer six questions about Oreo cookies. Next, they create four math problems using pictures and number sentences.
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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...
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The Difference Bar 1
Students use mental strategies to work out the difference between 2 two-digit numbers where the answer is less than ten. They write and solve difference problems where one number is a two-digit number and the other is a single digit...
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Review of Systems of Equations
Students work to complete various algebraic equations using different methods. Given a word problem, students create a poster identifying the various parts of the equation as well as the solution to the problem. Posters are presented...
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Two-Digit Addition With Regrouping
Second graders practice two-digit addition with regrouping. In this addition lesson, 2nd graders use craft sticks to solve two-digit regrouping problems. Students solve problems on the chalkboard.
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Mental Math Methods
In this mental math activity, students use mental math methods to solve problems. Students complete 1 addition, 1 multiplication, and 1 subtraction problem using these methods.
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Madeline and the Magnificent Puppet Show
Second graders demonstrate that they are cooperative learners, can solve problems, make decisions and, apply technology to the task through use of the Madeline and the Magnificent Puppet Show
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Subtract 9 From Any 2-digit Number
For this subtraction worksheet, students solve 18 problems in which the number 9 is subtracted from a two digit number. No hints or strategies are provided.
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Chart Trivia
Students practice addition and subtraction problems and answer questions using greater than and less than. They chart information to create a graph on the computer.
Curated OER
Prime and Composite Numbers with use of manipulatives (Elementary, Mathematics)
Learners learn what prime and composite numbers are. They learn how to identify them by working in a group and demonstrating an understanding of one work problem with 100% accuracy using the manipulatives provided.
Curated OER
The Take-Awar Bar 1
Students use an Internet tool, "The Take-Away Bar" to solve subtraction problems by breaking them into parts. They write and solve comparison problems. Students make sensible estimates and check the reasonableness of answers. They use...