Digital Math for Kindergarten | Composing Numbers Activities | Google Slides™

Kindergarten Digital Composing Numbers to 10 – Math for Google Slides™ | Ontario 2026 Aligned

Looking for interactive kindergarten composing numbers activities you can use for digital math centers, whole-group lessons, or distance learning?

This Google Slides™ composing numbers resource gives your students hands-on drag-and-drop practice combining two and three numbers to make a whole.

Students explore part–part–whole relationships, represent compositions with digital manipulatives, complete number sentences, and solve simple word problems.

 

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Perfect for:

✔ Whole-group teaching on the SMARTBoard or projector
✔ Digital math centers
✔ Google Classroom assignments
✔ Distance learning
✔ Hybrid classrooms

 

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What’s Included:

 

⭐ Lesson Slides (Slides 1–3)

Introduce and teach:

• What does it mean to compose a number?
• How can two parts combine to make a whole?
• How can we show a composing sentence?

👆 Use these slides for direct instruction before independent practice.

 

⭐ Composing Two Numbers (Slides 4–10)

Students:

• Read a composing sentence
• Show it using digital cubes
• Type the answer in the yellow box

Focus: Combining 2 numbers to make a total (sums to 10).

 

⭐ Composing Dominoes (Slides 11–32)

Students:

• Look at a domino
• Compose the two sides
• Drag numbers to create a matching composing sentence

 

⭐ Composing with Fingers (Slides 33–38)

Students:

• Read the composing sentence
• Use digital hands/fingers to model the equation
• Type the total

Supports 1:1 correspondence and subitizing connections.

 

⭐ Problem Solving (Slides 39–49)

Students:

• Read a word problem
• Click and drag pictures to model the situation
• Type the answer in the yellow box
• Strengthens reasoning, modeling, and equation writing.

 

⭐ Composing Three Numbers (Slides 50–57)

Lesson slides introduce composing more than 2 parts.

Students:

• Combine 3 numbers
• Model with digital counting bears
• Type the total

Builds flexible number thinking and deeper understanding of how parts combine.

 

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Skills Students Develop

• Composing quantities to 10
• Understanding part–part–whole relationships
• Representing compositions visually and symbolically
• Writing number sentences
• Solving composing word problems

This digital unit supports the foundation for:

→ Addition
→ Subtraction
→ Fact fluency development

 

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Why Teachers Love This Resource

✔ No prep — just assign or project
✔ Engaging drag-and-drop format
✔ Builds deep part–part–whole understanding
✔ Clear progression from 2 parts to 3 parts
✔ Reinforces number sentence structure
✔ Works for in-person OR digital classrooms
✔ Ontario-aligned

 

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Curriculum Alignment (Ontario 2026)

Supports: A6.5 — Compose and decompose quantities to 10

This resource has been reviewed and confirmed aligned with the 2026 Ontario Kindergarten Math Curriculum.

 

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Tech Tips

• Use in EDIT mode (not Present mode) so movable pieces work.
• If assigning in Google Classroom, students using iPads/tablets must have the Google Slides app installed to manipulate pieces.
• You may also download as a PowerPoint file to use on a SMARTBoard.

 

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Try Before You Buy!

Not sure if this format works for you?

Grab my FREE Digital Math for Kindergarten | Tally Marks | Google Slides™ to try it for free first.

 

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If you love this resource, be sure to check out my other Digital Math for Kindergarten activities or my complete, year-long digital math program💛