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# Number Smart Subitizing 0-20: The BEST Subitizing Practice EVER! Activinspire

PreK - 3rd
Subjects
Standards
Resource Type
Formats Included
• Flipchart File
Pages
180 pages

### Description

Welcome to the BEST subitizing practice EVER! Subitizing is the immediate recognition of a quantity. It builds number sense and strengthens knowledge of number facts with meaning, not just memorization. Included are slides with various ten frames, tally marks, fingers, dominoes, and dice.
•Slide the screen down to let your students see the slide as you say the word “subitize” to yourself. Then quickly re-cover the slide. Ask students who know how many to raise their hands.
• After a student answers correctly, ask, “How did you know that?” Encourage students to use strategies such as counting on, grouping, and how many are missing. On many slides you can also ask students what addition fact is represented as well as the final quantity.
• Subitize whenever you have spare seconds! Even if you only have a minute, your students can benefit from these mental math exercises AND mini-number talks (How did you arrive at your answer?).
Total Pages
180 pages
N/A
Teaching Duration
N/A
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### Standards

to see state-specific standards (only available in the US).
Count to answer “how many?” questions about as many as 20 things arranged in a line, a rectangular array, or a circle, or as many as 10 things in a scattered configuration; given a number from 1-20, count out that many objects.