Number Line Frog Hop (Addition and Subtraction)
Live a frog's life as you hop along a number line in search of flies. Learn how addition and subtraction can be represented as movement along a number line. Fred the frog may even help you get better at adding and subtracting two-digit numbers in your head by decomposing them into tens and ones.
LESSON MATERIALS:
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Student Exploration Sheet
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Exploration Sheet Answer Key
Answer Key for Subscribers Only
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Teacher Guide
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Vocabulary Sheet
LEARNING OBJECTIVES:
- Add numbers using a number line.
- Subtract numbers using a number line.
- Decompose a two-digit number into tens and ones.
- Mentally add/subtract by first adding/subtracting the tens and then the ones.
VOCABULARY:
- add, difference, equation, subtract, sum
User Recommendations (5):
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Kids enjoyed this one.. Helpful in determining who "gets it"
By: Stacey Sawyer (Maine) | Recommended 119 days ago
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nice and useful for kids
By: satam alshammary | Recommended 223 days ago
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I recommend using this Gizmo for adding and subtracting using the numberline
By: Maribel Bernal (New Mexico) | Recommended 331 days ago
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This is great even for the upper level grades, SPED Students and ELL who need many reviews with visuals.
By: Maribel Bernal (New Mexico) | Recommended 337 days ago
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I love using this Gizmo to encourage students to think algebriacally!
By: Lisa Bickel (Virginia) | Recommended 396 days ago
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