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Activity
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Illustrative Mathematics

The Marble Jar

For Teachers 9th - 12th Standards
A jar is filled with 1,500 marbles and customers of a bank can enter a contest to guess the correct percentage of blue marbles. How can an employee at the bank estimate the actual percentage without physically counting all 1,500 marbles?...
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Lesson Plan
Illustrative Mathematics

Chocolate Bar Sales

For Teachers 5th - 7th Standards
In this real-world example, algebra learners start to get a sense of how to represent the relationship between two variables in different ways. They start by looking at a partial table of values that define a linear relationship. They...
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Assessment
Bridges In Mathematics

Kindergarten Assessments and Scoring Checklists, Common Core State Standards

For Teachers K Standards
Whether or not your school has adopted Common Core standards, this resource provides great tools for assessing kindergartners' key numeracy and computation skills.
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Lesson Plan
Curated OER

Basketball

For Teachers 9th - 12th Standards
Tap into the competitive nature of teenagers as your class practices setting up and solving rational equations. This activity starts with a specific ratio of games won to games played, then asks how many more games must be played to...
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Lesson Plan
Curated OER

Classroom Supplies

For Teachers 3rd - 4th Standards
Challenge young mathematicians to buy classroom supplies by staying within the means of a $1,000 budget. The mathematical activity provides learners with the opportunity to decide what items from the supply list would benefit a class of...
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Lesson Plan
Illustrative Mathematics

Finding a 10% increase

For Teachers 6th - 8th Standards
A quick problem to test your mathematicians' knowledge on percent increase. Two different solutions are provided, mental math and computing. Ask your learners to include a description of what they did to supplement their answer.
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Assessment
Inside Mathematics

Suzi's Company

For Teachers 9th - 12th Standards
The mean might not always be the best representation of the average. The assessment task has individuals determine the measures of center for the salaries of a company. They determine which of the three would be the best representation...
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Interactive
Curated OER

Britain and the British

For Students 6th - 7th
For this Great Britain worksheet, students complete a 10 question multiple choice on-line interactive quiz about British history and culture.

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