Illustrative Mathematics
Equal Area Triangles on the Same Base II
A deceptively simple question setup leads to a number of attack methods and a surprisingly sophisticated solution set in this open-ended problem. Young geometers of different strengths can go about defining the solutions graphically,...
Virginia Department of Education
Distance and Midpoint Formulas
Small groups work through two guided activities to derive the distance and midpoint formulas for the coordinate plane. The activities begin with concrete examples and move to abstract.
Curated OER
Prioritizing Time
Tenth graders examine and identify how to avoid time conflicts in their own personal time schedules. They participate in a role-play about a time schedule conflict, participate in a class discussion, develop a list of their four most...
Curated OER
Addition and Subtraction Facts to 20 - Manipulative
Here is a good lesson that will allow your student to practice their addition and subtraction facts to 20. They practice facts using fact cards and practice strategies such as doubles strategies, and count to 10 strategies.
Curated OER
Not So Snappy 10
In this math worksheet, students look for the answers to each word problem that is focused around the number 10. They use the basic skills of arithmetic.
Curated OER
Caloric Burning Activities
Fourth graders use problem solving, decision making and basic math skills to calculate calories used during different activities. They determine the relation between food intake and activity. Students also figure out the activity,...
Curated OER
Math Lesson Study Plan
Second graders find missing addends by solving math word problems. In this missing addend lesson, 2nd graders work in a whole group setting to find the missing addends in word problems before using the strategies to work independently....
Curated OER
Building Word Problems
Sixth graders study addition and subtraction facts. In equal groups, they play a race game to correctly solve addition and subtraction problems. Using a PowerPoint presentation, the teacher demonstrates how to write word problems and...
Curated OER
Partial Products
Students use the partial products algorithm to complete multiplication problems. In this partial products lesson plan, students are introduced to the algorithm and connect the relationship to multiplication and division problems.
Curated OER
Angry Feelings
Students explore how to manage angry feelings. In this behavior lesson plan, students discuss techniques to handle angry feelings, such as counting to ten and talking out the problem.
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"NSN, Fractions, Percents, Ratios, Rates" Investigations
Sixth graders engage in an investigation about the concepts related to fractions. They read, represent, compare, and order proper and improper fractions, and mixed numbers. They demonstrate an understanding of relationships involving...
Curated OER
One- and Two-Digit Multiplication
Third graders multiply whole numbers by one- and two-digit numbers using base ten blocks and technology connection.
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Number and Operations- Using Gift Certificates
Students apply number and operation skills to learn how to spend a gift certificate. In this mathematical reasoning activity, students use base 10 blocks as money and calculate how much money they have.
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Whole Language Approach in Solving Word Problems
Students explore the concept of word problems. In this word problems lesson, students read a version of the Three Little Pigs. Students discuss what math vocabulary words such as 'in all' and 'many more' meant in the story.
Pennsylvania Department of Education
Using Multiplication to Solve Word Problems
Fourth graders solve word problems using multiplication. In this multiplication lesson plan, 4th graders write and solve word problems using their prior knowledge of multiplication.
Pennsylvania Department of Education
Adding and Subtracting Rational Numbers to Solve Problems
Students explore the concept of probability. In this probability instructional activity, students use area to determine probability. Students use charts and spinners to help determine the probability of events such as...
Curated OER
Multiplication Strategies and Writing Story Problems
Third graders model multiplication problems using Unifix cubes. They compute and solve problems involving addition and subtraction of 3- and 4- digit numbers and basic facts of multiplication and division. They practice mental math...
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Strategies for a Successful World
Students solve real-life social issues. In this character education instructional activity, students discuss instances of gender bias, stereotyping, and discrimination. Students then discuss how to address the social issues.
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Estimating Solutions to Word Problems
Fourth graders explore number sense by completing word problems in class. In this estimation instructional activity, 4th graders define terms such as sum, difference, estimate and best. Students complete estimating worksheets based on...
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Fuel Saving
Students explore the problem of percentages. Students find a given fraction or percentage of a quantity. Students devise and use problem solving strategies on problems explored.
Curated OER
The Clumsy Tiler N (Fractions)
Students explore patterns and geometric sequencing. Students devise and use problem solving strategies to explore situations mathematically. Students solve real life problems. They demonstrate, with cardboard pieces, fraction and...
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Block It Game
Students use problem solving strategies such as guess and check and visualization to play the game. They use mental mathematics to decide on the placement of pattern blocks and look for patterns.
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Algebra...Your Second Language
Help learners translate word problems into algebraic equations. They will rewrite words using symbols and evaluate algebraic expressions using real life scenarios, animation sequences, video presentations, and activities to help students...