| 🔢 Place Value |
Tens and ones, then hundreds. Digit in a place, compose a number, value of a digit, which number is greater. |
K → 8 |
| 👆 Counting / Skip Count |
K–1 count objects on screen, one more/less, and easy skip-counts. Grade 2+ skip-count and number-sense only (no object counting). |
K → 8 |
| 🔁 Patterns |
Emoji ABAB / AABB patterns for K–1. Number sequences, growing patterns, and missing-middle blanks for Grade 2+. |
K → 8 |
| ↕️ Ordering |
Smallest, largest, first in order, middle value, and (7+) which number is between two others. |
K → 8 |
| ⚖️ Even / Odd |
Classify a number, pick the even or odd from a list, and (7+) even/odd of a sum. |
K → 8 |
| 📐 Compare |
More, fewer, same — with sets of objects, numerals, then < > =. |
K → 8 |
| 🎯 Estimate |
Round to 10, then closer-to, about-how-much sums, and rounding to 100 for older kids. |
K → 8 |
| 🔟 Decimals |
Tenths, hundredths, and thousandths grids, write a fraction as a decimal, money as $0.45, compare 0.4 vs 0.04, then decimal + − × ÷. |
4+ Hidden K–3 |
| ± Integers |
Read a mark on a number line, name opposites, and add or subtract with negatives (small phone-friendly range). |
6+ Hidden K–5 |
| ▤ Ratios |
Read or complete a tape-diagram ratio (3:2, 4 red for every 5 blue) and find a unit rate from a small countable story. |
6+ Hidden K–5 |
| % Percent |
Read a shaded 100-grid or percent bar, find a friendly part like 20% of 50, and one-step tax/tip lite. |
6+ Hidden K–5 |
| 🎲 Probability |
Find P as a fraction from a spinner or bag, certain (1) vs impossible (0), and compare which event is more likely. |
7+ Hidden K–6 |