teaching resource

Subitizing Slap It!

Teach Starter Publishing
Google Slide, PDF | 1 page | Grades: K - 1

Help students strengthen subitizing skills with this multiplayer math card game!

Add this Game to Your Subitizing Activities!

Subitizing… What is that? Subitizing is the ability to instantly recognize clusters of objects and mentally group them together. This is an important foundational skill that will help students with addition concepts. This resource is a great way to review subitizing skills but in a fun way! With our “Subitizing Slap It!” game, students will have an opportunity to practice their visual clustering skills with a competitive activity.

To play:

  1. Shuffle both the dot cards and the number cards. Place the number cards face down in a pile in the middle of the playing area.
  2. Distribute the dot cards evenly among the players.
  3. The youngest player flips over a number card in the center.
  4. In a clockwise direction, players flip over one dot card at a time. Players will look at each turned-over card and see if the number of dots match the number in the middle.
  5. If none of the players turn over a dot card that matches the number card, all players stack their dot cards in the middle, next to the number card.
  6. When a dot card is flipped over that matches the number card in the middle, the first player to slap the number card gets all of the dot cards that are in the middle of the playing area. 
  7. The person with the most dot cards at the end of the allotted time wins!

Through this activity, students will instantly recognize the quantity of a small group of objects in organized and random arrangements.

Tips for Differentiation + Scaffolding 

A team of dedicated, experienced educators created this resource to support your math lessons. 

Use this subitizing game to enhance learning through guided math groups or whole class lessons.

If you have a mixture of above and below-level learners, check out these suggestions for keeping students on track with the concepts: 

🆘 Support Struggling Students

Help students who need help understanding the concepts by limiting the number of players. This way, students will only have to look at their card and their partner’s card. 

➕ Challenge Fast Finishers

For students who need a bit of a challenge, encourage them to say how many more dots are needed (or taken away) to equal the number card.

🏃 Relay Race

Divide students into two team lines and show a dot card to the students at the front of each line. The student that produces a correct number first wins the flashcard. The team with the most flashcards at the end of the game wins!

💃 Mirror Game🕺

This activity works best with small groups because you’ll need enough dry-erase boards and markers for each student. Divide your class into 2 groups seated in 2 lines facing each other. Project a task card and give students a set time to record their answers on their board. On your cue the students turn their boards around so their partner can see their answers. If both students in a pair have the correct answer, they get 2 points. If one has the correct answer, the team gets 1 point.

Plan lessons for all ability levels with our 10 Best Scaffolding Strategies! 

Easily Prepare This Resource for Your Students

Use the dropdown icon on the Download button to choose between the PDF or editable Google Slides version of this resource. 

Print on cardstock for added durability and longevity. Place all pieces in a folder or large envelope for easy access. 


This resource was created by Lauren Blankenship, a teacher in Florida and Teach Starter Collaborator.

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