Early mathematics and number sense
Early Math: Number Decomposition & Soroban Foundations
Develop part–whole understanding through counters, drawings, equations and an introduction to soroban bead values.
- Recommended age
- Approximately 4–7 years; early number sense / Pre-K–Grade 1
- Starting level
- Adult-supported counting; no prior soroban experience required
- Format
- Printable PDF · US Letter · parent notes and student activities
- Publisher
- Kinder Brain Development
- SKU
- KBD-MA-NS-001
- Language
- English adult guidance with Spanish learning prompts; math guidance is bilingual where useful.
What is included
- Counting and part–whole mats for 0–10
- Make-five, make-ten and missing-part activities
- Soroban diagrams for 0–9 and an introduction to ten
- Worked examples, story problems and adult answer notes
Learning objectives
- Represent a quantity with objects before recording a numeral
- Split and recombine numbers in more than one way
- Find a missing part using counters or a drawing
- Represent 0–9 on one soroban rod and 10 using a tens rod
Scope and sequence
| Stage | What learners explore |
|---|---|
| Count and compare | One object per count; quantities 0–5, then 6–10. |
| Parts of five and ten | Separate and recombine groups; record equations after modeling. |
| Soroban foundations | Beads count only when touching the beam; lower beads each represent 1 and an upper bead represents 5 on the ones rod. |
| Apply | Build 6–9 as 5 plus a part; show 10 as one ten; model simple joining and taking-away stories. |
Boundaries of this edition
No physical soroban, counters or printed shipment. No speed calculation, mental-soroban training or claims of cognitive improvement. A physical soroban is optional; printed diagrams support the introductory activities.
Using the material
Choose a small task, model it, and let your child act. Use the Profe Sori teaching routine to adjust support. Ages are guidance, not entry requirements or promises of results.