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Assessment
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Illustrative Mathematics

Solving Two Equations in Two Unknowns

For Students 8th - 10th Standards
More than just a one-problem resource, learners must explain their answer and incorporate a writing component to mathematical thinking. The resource also includes an explanation of the solution to help with the reasoning. 
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Lesson Plan
Curated OER

Stock Swaps, Variation 2

For Teachers 6th - 8th Standards
If Microsoft wanted to take over Apple, how many shares would they need to break even? This is an ideal task for seventh graders who are studying proportional relationships and applying them to real-world scenarios. Use it as an...
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Lesson Plan
Illustrative Mathematics

DVD Profits, Variation 1

For Teachers 7th - 9th Standards
The idea in the resource is to understand the connections between proportional relationships, lines, and linear equations. To stay within the context of the standard, skip the part of the resource that solves with unit rates. Instead,...
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Lesson Plan
Curated OER

Math computation

For Teachers 1st - 2nd
The lesson says it is intended for 4th grade but it is suitable for grades 1-3 as well. The class discusses what it means to add, the commutative property of addition, and mathematical reasoning. This is an exercise in number sense,...
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Lesson Plan
Curated OER

One Good Turn Deserves Another

For Teachers 1st - 2nd
Students make observations about shapes and 1-, 2-, and 3-dimensional objects. They conduct observations and make predictions regarding transformations of simple geometric shapes. They identify shapes that occur in household items.
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Lesson Plan
Curated OER

Probability and Statistics

For Teachers 9th - 11th
Students reason mathematically as they solve problems dealing with probability of an even occurring. In this probability lesson, students differentiate between different rankings of candidates running for leadership. They identify...
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Lesson Plan
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Curated OER

Art Class, Variation 2

For Teachers 6th - 8th Standards
Given a set of six paint mix ratios, artistic mathematicians produce an equation that relates the number of parts for blue paint to parts for yellow paint resulting new shades of green. 
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Lesson Plan
Curated OER

Deductive and Inductive Reasoning

For Teachers 9th - 10th
Students differentiate between inductive and deductive reasoning. In this geometry lesson, students identify congruent figures and examine logos for congruency.
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Worksheet
Curated OER

Problem-Solving Strategy: Use Logical Reasoning

For Students 3rd - 5th
In this logical reasoning activity, students utilize the problem-solving strategy of logical reasoning to answer 2 short answer mathematical questions.
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Lesson Plan
Curated OER

To Be (Half) Or Not To Be (Half)

For Teachers 1st
First graders demonstrate various ways to represent and verify a whole or set separated in two, three, or four equal parts. Using interlocking cubes, Students model a part of a whole or a part of a set. They use appropriate tools and...
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Worksheet
Helping with Math

Solving Equations with Two-Stepping! (4 of 4)

For Students 6th - 8th Standards
Here are 12 two-step algebraic equations to be solved. The first problem is completed as an example to your class, but the remaining can be worked right on the page. An answer key is available by clicking on a small box at the top of the...
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Lesson Plan
Curated OER

Count on Me

For Teachers 4th
Fourth graders use inductive reasoning to find algebraic patterns in geometric figures. They use technology (i.e., calculators, computers) and manipulatives to discover number patterns involving geometric concepts. They solve concrete...
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Lesson Plan
Curated OER

Big Boats Up The River

For Teachers 2nd - 3rd
Using boats along in the Port of Albany as the focus, learners practice adding single-digit numbers and interpreting data. This lesson comes with the worksheets, resource links, and other materials to make it a worthwhile experience.
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Assessment
Achieve

Greenhouse Management

For Teachers 8th - 10th Standards
Who knew running a greenhouse required so much math? Amaze future mathematicians and farmers with the amount of unit conversions, ratio and proportional reasoning, and geometric applications involved by having them complete the...
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Assessment
Curated OER

Dental Impressions

For Teachers 7th - 10th Standards
What an impressive task it is to make dental impressions! Pupils learn how dentists use proportional reasoning, unit conversions, and systems of equations to estimate the materials needed to make stone models of dental impressions....
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Assessment
Inside Mathematics

Winning Spinners

For Teachers 9th - 12th Standards
Winning a spin game is random chance, right? Pupils create a table to determine the sample space of spinning two spinners. Individuals determine the probability of winning a game and then modify the spinners to increase the probability...
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Assessment
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Mathematics Assessment Project

College and Career Readiness Mathematics Test C2

For Students 9th - 12th
Scholars apply knowledge learned over their high school math courses in order to determine their college readiness. The 20-page resource emphasizes applied problem solving.
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Lesson Plan
Institute for Teaching through Technology and Innovative Practices

The Right Number of Elephants

For Teachers Pre-K - K Standards
How can you tell if a number of items is reasonable? Combine math and language arts with a fun lesson based on Jeff Shepard's The Right Number of Elephants. After reading the book, kids discuss amounts of other items and create minibooks...
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Lesson Plan
EngageNY

Increasing and Decreasing Functions 2

For Teachers 8th Standards
Explore linear and nonlinear models to help your class build their function skills. In a continuation of the previous lesson, learners continue to analyze and sketch functions that model real-world situations. They progress from linear...
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Lesson Plan
EngageNY

Triangle Congruency Proofs (part 1)

For Teachers 9th - 10th Standards
Can they put it all together? Ninth graders apply what they know about proofs and triangle congruence to complete these proofs. These proofs go beyond the basic triangle congruence proofs and use various properties, theorems, and...
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Lesson Plan
EngageNY

Special Lines in Triangles (part 1)

For Students 9th - 10th Standards
Allow your pupils to become the mathematicians! Individuals explore the properties of a midsegment of a triangle through construction and measurement. Once they figure out the properties, learners use them to draw conclusions.
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Assessment
Concord Consortium

Proportional Representation

For Students 9th - 12th Standards
Sometimes the solution is all a matter of perspective. The short assessment task presents a problem to pupils that requires them to make sense of a diagram. Once learners see two similar triangles, the rest of the solution is solving a...
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Lesson Plan
Curated OER

Mathematical Reasoning

For Teachers 9th
Ninth graders solve mathematical mysteries associated with a real life situation.  For this ninth grade mathematics lesson, 9th graders choose a scenario from Real Life Math Mysteries by Mary Ford Washington and solve one or more of the...
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Lesson Plan
Curated OER

Dividing By Two-digit Divisors

For Teachers 7th - 9th
In this dividing by two-digit divisors worksheet, students working with a partner problem solve and calculate the answers to ten word problems and mathematical division equations.