Students work in pairs to measure length by lining up cubes along ...

Students work in pairs to measure length by lining up cubes along the longest side of an item. They count and record length by counting the number of cubes.

In this video from Cyberchase, the CyberSquad searches for a kidnapper using ...

In this video from Cyberchase, the CyberSquad searches for a kidnapper using their only clues: a footprint and a handprint. ***Access to Teacher's Domain content now requires free login to PBS Learning Media.

In this video segment from Cyberchase, Digit and the CyberSquad learn that ...

In this video segment from Cyberchase, Digit and the CyberSquad learn that equations are balanced when the same number is on each side. ***Access to Teacher's Domain content now requires free login to PBS Learning Media.

When students plot irrational numbers on the number line, it helps reinforce ...

When students plot irrational numbers on the number line, it helps reinforce the idea that they fit into a number system that includes the more familiar integer and rational numbers.

Students create patterns using pattern blocks. Then they pose a question to ...

Students create patterns using pattern blocks. Then they pose a question to their peers like, öWhat fraction of my shape is red? Students describe their answers geometrically, verbally, and in writing.

The first of these word problems is a multiplication problem involving equal-sized ...

The first of these word problems is a multiplication problem involving equal-sized groups. The next two reflect the two related division problems, namely, "How many groups?" and "How many in each group?"

This is a task from the Illustrative Mathematics website that is one ...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

In this activity, students explore the effect of chemical erosion on statues ...

In this activity, students explore the effect of chemical erosion on statues and monuments. They use chalk to see what happens when limestone is placed in liquids with different pH values. They also learn several things that engineers are doing to reduce the effects of acid rain.

This is a task from the Illustrative Mathematics website that is one ...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: One day, Frog and Toad were sitting together on a lily pad. Some lily pads were in a line across the pond. In the morning, Frog hopped three lily pads ...

In this Cyberchase video segment, the CyberSquad calculates the speed of each ...

In this Cyberchase video segment, the CyberSquad calculates the speed of each broom. ***Access to Teacher's Domain content now requires free login to PBS Learning Media.

One common mistake students make when dividing fractions using visuals is the ...

One common mistake students make when dividing fractions using visuals is the confusion between remainder and the fractional part of a mixed number answer.

In this number line task students must treat the interval from 0 ...

In this number line task students must treat the interval from 0 to 1 as a whole, partition the whole into the appropriate number of equal sized parts, and then locate the fraction(s).

This is a task from the Illustrative Mathematics website that is one ...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

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