# Math

Math (X) - Professional (X) - Primary (X) - Professional Development (X)

## Building Deeper Understanding of Decimal Numbers

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Steve Hinds demonstrates how a brief discussion of money and decimals can help students to shed common misconceptions about decimal place value. (Click here for the background essay.)

## Do an Hour of Code | Tynker

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Build the computer literacy and problem solving skills students need to become innovators of the future.

Introduce students to computer programming, or take their coding skills to the next level as they engage in fun activities and projects that enhance STEM learning outcomes. With an Hour of Code with Tynker, teachers can easily introduce the basics of computer programming in a fun and intuitive way.  Start with any of the six adventure puzzles, then students can apply what they’ve learned to create fun projects to share with others – multi-level and multi-player games, math patterns, interactive comics and greeting cards.

No programming experience is required.  Use the resources provided to quickly plan a successful Hour of Code for your class. Students can access Candy Quest and Dragon Dash puzzles from this site.  The rest of the activities, plus a teacher's guide and answer keys, can be found at hourofcode.tynker.com.

## Deepening Conceptual Understanding

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Steve Hinds demonstrates an approach to graphing function solutions that is based on the underlying meaning of the points, and not on mechanically following a procedure. (Click here for the background essay.)

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Steve Hinds demonstrates and discusses how teachers can successfully and gradually move from informal to more formal representations of functions. (Click here for the background essay.)

## Resisting the Temptation to Be Too Helpful

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Steve Hinds demonstrates and discusses how teacher efforts to be helpful can sometimes backfire and limit opportunities for student learning. (Click here for the background essay.)

## Geometry and Spatial Relations: It's a Perfect Fit (Part 2)

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In this resource group, teachers can focus on the topic of geometry and spatial relations by having students identify and describe numerical relationships found among pattern block shapes. Students learn to join pattern block pieces together to cover a region. This resource group is part of the Mathline Elementary School Math Project.

## Number Sense and Computation: An Apple a Day

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Using this resource group, teachers can focus on the topic of number sense and computation by having students make estimates to analyze the number of apples per acre. Students learn to take samples and use benchmarks to make reasonable estimates. This resource group is part of the Mathline Elementary School Math Project.

## Geometry and Spatial Relations: It's a Perfect Fit (Part 1)

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Using this resource group, teachers can focus on the topic of geometry and spatial relations and, in particular, on identifying, describing, and classifying two-dimensional shapes. Students are challenged to duplicate two-dimensional shapes and sort a collection of shapes according to their attributes. This resource group is part of the Mathline Elementary School Math Project.

## Build Background (Odd Squad) | Teaching Tips

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A 1st grade teacher introduces the concept of length and reinforces good measurement practices to her students, specifically the importance of being precise. Working with students, she uses non-standard measuring units to demonstrate how to measure a distance precisely.

## Teaching Mathematical Practices (Odd Squad) | Teaching Tips

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In this segment, a 1st grade teacher discusses how she reinforces the mathematical concepts of being precise, persevering, and visualizing solutions in her unit on measurement.

## Fair Sharing - Peg + Cat | PBS KIDS Lab

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Below you'll find a variety of resources to help teach children fractions and division, as well as an educator's guide under the Support section. Peg and Cat help a band of pirates share treasure fairly, using simple division and fractions. This unit has two class activities, videos, online games, and activities to extend the learning at home.

## Agent Obfusco's Challenges | Odd Squad

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Olive and Otto have to solve a series of challenges to keep their Odd Squad badges. Olive and Otto become concerned when they find out that the test they have to take to keep their Odd Squad badges is being administered by Agent Obfusco, a mysterious agent who speaks only in word problems. They create number sentences to figure out the answers.

## Watch Together (Odd Squad) | Teaching Tips

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A 1st grade teacher uses a clip from Odd Squad to demonstrate measurement to her class. Students watch how Odd Squad agents use measurement to defeat the Hydroclops. They also model good mathematical practices such as being precise and persevering terms that are discussed and reinforced by the teacher.

## Number Sense and Computation: To Half or Half Not

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In this professional development video, teachers can focus on the topic of number sense and computation by creating equivalent fractions that represent one-half through the use of geoblocks. This video can be used in conjunction with the To Half or Half Not Lesson Plan.

## Numbers and Counting - Peg + Cat | PBS KIDS Lab

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Below you'll find a variety of resources to help teach children number sense and counting, as well as an educator's guide under the Support section. Join Peg, Cat and their barnyard friends, and get practice counting to 10 and by 10s to 100. This educator unit has two activities, related video clips, and online games to extend learning at home.