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# Browse results: Operations

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## Bianca Gets a Present

In this video segment from Cyberchase, Bianca is babysitting two young girls on Halloween. When their mother is late, she has to take them trick-or-treating even though it is her birthday. To thank her, the girls combine their Halloween candy and then share it equally amongst themselves and Bianca.

Accessibility features: Transcript

3-6

Video

## Bianca the Spy

This video segment from Cyberchase introduces the idea of inverse operations as Bianca imagines herself as a spy.

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4-8

Video

## Calculating Clones

In this video segment from Cyberchase, Inez and Lucky figure out how to keep track of the number of clones as they continue to multiply.

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3-6

Video

## Competing for the Northern Hemisphere Games

In this video from Cyberchase, Harry must score a total of 50 points in various events to qualify for the Northern Hemisphere games in New Orleans.

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4-8

Video

## Creating Equal Shares

Students practice fractions by sharing certain numbers of objects among different numbers of people. They begin with unit fractions and move to sharing multiple objects among multiple people, in which a < b, and to produce fractions less than one.

3-6

Lesson Plan

## Estimating Greeting Card Sales

In this video segment from Cyberchase, Harry tries to calculate the total amount of money he has earned by selling greeting cards.

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3-6

Video

## Estimation

Students practice their estimation skills by estimating time and numbers of objects in situations in which counting is not feasible or necessary.

3-6

Lesson Plan

## Feed That Dog

The CyberSquad solves the problem of giving equal parts of two apples to Cerberus, the three headed dog of Greek mythology, in this video from Cyberchase.

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3-6

Video

## Filmmaking on a Budget

Students practice column addition in relation to budgets and are asked to create budgets that meet particular totals.

3-5

Lesson Plan

## Film Shoot: Day 2

The CyberSquad reviews their budget for the second day of their film shoot in this video from Cyberchase.

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3-6

Video

## Film Shoot: Day 3

In this video segment from Cyberchase, the CyberSquad compares their budget with their actual spending from day three of their film shoot.

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3-6

Video

## Film Shoot: Day 4

In this Cyberchase video segment, the CyberSquad figures out how to incorporate a new scene into their film while staying within their budget.

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3-6

Video

## How Many Jelly Beans?

In this video segment from Cyberchase, Inez estimates whether she has enough jelly beans in her large container to decorate all of the cookies in her batch.

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3-6

Video

## Introduction to Negative Numbers

Students are introduced to the concept of negative numbers through simple equations and the use of a number line that is extended beyond zero in the negative (left) direction.

4-8

Lesson Plan

## Inverses as a Form of Undoing

Students learn about inverse operations and how to write the inverse of a sequence of operations. They practice by solving two-step equations and checking their solutions.

5-8

Lesson Plan

## Living with Diabetes

A patient discusses diabetes and how he manages his carbohydrate intake in this video segment from TV 411.

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5-8

Video

## Making Popcorn Balls

In this Cyberchase video segment, Bianca uses multiplication to help her adjust the recipe for popcorn balls.

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4-7

Video

## Multiplication as Combinations

Students learn to systematically identify all possible combinations, first among 2 objects with 3 possibilities each and then among 3 objects with 2, 2 and 4 possibilities each.

3-6

Lesson Plan

## Multiplication as Replication

Students build tables and use patterns as an introduction to multiplication. They are encouraged to use multiplication by 10 or 100 for larger values as the beginnings of commutativity and distribution are introduced.

2-5

Lesson Plan

## Multiplication by 10

Students practice multiplying by 10 by adjusting a recipe to be 10 times larger. They examine the results to learn the procedure of adding a 0 to the multiplicand when multiplying by 10. They also practice dividing by 10 in the same manner.

3-6

Lesson Plan

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