

 Lesson plan   
Students develop their understanding of numbers and learn to recognize the number 3 through various examples and exercises. 

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 Activity   
Students learn to work with fraction bars. 

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 Activity   
Students will learn about the structure of fractions. 

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 Activity   
A simple way to measure things or to draw a straight line. The ruler is adjustable in size and can be used on the entire page. 

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 Activity   
A 100 bead string with alternating groups of 5 or 10 red and 10 white beads. 

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 Lesson plan   
Write numbers using both expanded notation and standard form, up to billions. 

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 Lesson plan   
Develop and analyze strategies for adding and subtracting numbers. 

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 Lesson plan   
Compare and order numbers using a number line. Compare numbers using less than, greater than and equal to symbols. 

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 Lesson plan   
Compare and order decimals. Order decimals on a number line. Use the greater than, less than or equal to symbols to compare decimals. Identify equivalent decimals. Order times, heights and times in a race. 

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 Activity   
Students learn how to partition numbers. 

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 Lesson plan   
Students learn to recognize shapes and colors with six different exercises. 

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