Numbers and Operations

Number Systems

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RESOURCE GRADE LEVEL MEDIA TYPE
Counting and Place Value

Counting and Place Value

Students explore counting through the concept of place value in our base-10 numeration system. They practice grouping in groups of ten and groups of ten tens.

2-5

Lesson Plan

Counting into the Ten-thousands

Counting into the Ten-thousands

Students are introduced to place value into the 10,000s through the use of an abacus. They practice writing and recognizing large numbers.

3-6

Lesson Plan

Equal Amounts of Gold

Equal Amounts of Gold

In this Cyberchase video segment, the CyberSquad helps Pan and Pin divide up 15 gold bars. OER Level

3-6

Video

Importance of the Origin

Importance of the Origin

The CyberSquad tries to rescue the Cyberchase Council, which is being held captive by Hacker in this video segment from Cyberchase. OER Level

4-8

Video

Introduction to Negative Numbers

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

Inventing Negative Numbers

Inventing Negative Numbers

In this Cyberchase video segment, the CyberSquad locates the Cyberchase Council by using negative numbers. OER Level

4-8

Video

Keeping Track of the New York City Marathoners

Keeping Track of the New York City Marathoners

In this video segment from Cyberchase, Bianca figures out a way to count the thousands of runners in the New York City Marathon. OER Level

3-6

Video

Locating and Ordering Equivalent Fractions on the Number Line

Locating and Ordering Equivalent Fractions on the Number Line

Students find ways to share different-sized items equally between 2 people as well as to find equivalent fractions on a number line and to order those fractions by size.

3-6

Lesson Plan

The Measurement Debate

The Measurement Debate

In this Cyberchase video segment, the CyberSquad helps resolve a dispute about the squares on the Gollywood Walk of Fame. OER Level

4-8

Video

Measuring Object Length on a Number Line

Measuring Object Length on a Number Line

Students learn to measure from the zero mark and are taught to measure objects that are not aligned with the zero mark by creating a number sentence using subtraction.

4-7

Lesson Plan

Reading a Thermometer

Reading a Thermometer

In this video segment from Cyberchase, the CyberSquad learns how to read a thermometer as they try to keep their chocolate sculpture from melting. OER Level

3-5

Video

Summing Integers:Positive and Negative

Summing Integers:Positive and Negative

Students add, subtract and compare positive and negative integers.

4-8

Lesson Plan

Using Grouping to Count Quickly

Using Grouping to Count Quickly

In this Cyberchase video segment, the CyberSquad helps the Fairy Tale people save their king by teaching them how to count quickly by grouping. OER Level

3-5

Video