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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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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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.

Planning a Budget

Students practice column addition and lining up decimal points in the context of money while they watch a video segment. Assessments provide more practice adding numbers in columns, and students troubleshoot an error in misaligned decimal addition.

Summing Integers:Positive and Negative

Students add, subtract and compare positive and negative integers.