Credits

# Math

#### Results: 20 Videos

##### Attend to Precision: Circumference and...

Students select objects in the classroom and measure their circumference and diameter. View Video

##### Attend to Precision: Fraction Strips

Students explore fractions through a story, "fraction strips", and a game with a number cube. View Video

##### Attend to Precision: Fractions and Geoboards

Working with geoboards helps students reach a better mathematical understanding of the concept of "half." View Video

##### Construct Arguments: Fractions and Geoboards

Geoboards help students move from imprecise understandings of "half" to more precise mathematical thinking about the concept. View Video

##### Construct Arguments: Ladybug Counting

Students observe ladybugs and collect data in order to answer quantitative questions. They then compare and discuss answers as a class. View Video

##### Construct Arguments: Pumpkin Seeds

In this lesson, students work in groups to discuss and revise their estimates of how many seeds are in a small pumpkin. View Video

##### Modeling: Domino Math

A teacher uses real dominos to help students explore properties of addition. The dominoes are a concrete representation of the lesson's mathematical ideas. View Video

##### Modeling: Story-Based Centers

A teacher uses one story to create eight story-based centers—places where students explore different aspects of the story, especially as it pertains to mathematical learning. View Video

##### Problem Solving: Bubble Gum Contest

Students work on an activity where they gather data for a bubble gum contest. View Video

##### Problem Solving: Pencil Box Staining

Students work on a project to build and stain wooden pencil boxes. This involves measuring and calculating the surface area of geometric shapes. View Video

##### Reasoning Abstractly and Quantitatively: Beans, Beans...

Students use abstract and quantitative reasoning to estimate how many beans are in a bag. View Video

##### Reasoning Abstractly and Quantitatively: Dice...

Students use abstract and quantitative reasoning to predict dice rolling. View Video

##### Reasoning: Cranberry Estimation

In this estimation lesson, students are asked to predict and record how many scoops of cranberries fit into a jar. View Video

##### Reasoning: What's the Price?

Students use various problem-solving strategies to understand the cost of household items, as well as the partitive model of division. View Video

##### Repeated Reasoning: Products and Sums

In this lesson, students use array structures to reason and conjecture about relationships between sums and products. View Video

##### Repeated Reasoning: Products and Sums

Students use array structures to reason about relationships between sums and products. Charts help them identify patterns. View Video

##### Repeated Reasoning: Valentine Exchange

Students work to answer the question: "How many cards would be needed if all 24 students in the class were to exchange cards with each other?" View Video

##### Strategic Tool Use: Domino Math

Students explore properties of addition using dominos. Both 3D and 2D tools provide concrete representations of the lesson's mathematical ideas. View Video

##### Strategic Tool Use: Pencil Box Staining

In this project, students work to build and stain wooden pencil boxes. This involves selecting the right tools to measure and calculate the surface area of geometric shapes. View Video

##### Strategic Tool Use: Windows, Dinos, and Ants

First-graders solve real-world measurement problems using standard and non-standard measuring tools. View Video