Education Concept Tracker

A prerequisite knowledge graph of 1590 learning concepts across 8subjects. Track what you've mastered and see exactly what you're ready to learn next — the topics whose prerequisites you've already met. Built on the Marble Open Skill Taxonomy.

← Back

Counting forwards and backwards (age 6+)

Mathematics · Counting & Cardinality · procedural

Count forwards and backwards in tens from any number (not just multiples of 10)

What mastery looks like

Count 7, 17, 27, 37 … from a non-multiple starting point
Count backwards in tens from 83
Explain the pattern of adding/subtracting 10

Check your understanding

If Counting forwards and backwards (age 6+) starts at 37 and you ask them to count up in tens, can they say 37, 47, 57, 67 — crossing over into the next hundred without getting stuck?

Prerequisites

Required first

Counting in 2s
The two digits of a two-digit number

Unlocks (0 directly)

None.

Knowledge-graph map

Counting forwards and backwards (age 6+)

What mastery looks like

Check your understanding

Prerequisites

Unlocks (0 directly)