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Kindergarten math · Unit 4: Putting together and taking apart

Hidden counters

What this lesson shows

7 counters, and some hide under a cup. 4 show, so 3 hide: 4 + 3 = 7.

The worked example

The lesson works this one step by step: 7, 4 showing. Then your kid tries one like it on paper.

The steps

  1. Know how many in all
  2. Count the ones you see
  3. Count on to the total
  4. That many hide

Helping at home

Read each box aloud, with how many in all. Your kid counts the ones that show, then counts on to the total on their fingers. Play it with real cups and coins.

If your kid gets stuck

Count the ones you see, then count on to the total.

Watch it with Lux

With Lux, this lesson is a narrated video and a printed page your kid works on. Then Lux helps with the same math on their own worksheet, one question at a time.

See how Lux works

Standards

  • Common Core K.OA.A.3
    Decompose numbers less than or equal to 10 into pairs in more than one way, e.g., by using objects or drawings, and record each decomposition by a drawing or equation (e.g., 5 = 2 + 3 and 5 = 4 + 1).
Matches a standard in all 50 states and DCSee each state's code

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