GRADE 2 · ALBERTAOUTCOME AB-MAT2-2N3
L2 · Naming unit fractions: halves, thirds, fourths, to tenths
Learning goal
“I can name 1 part of a whole split into equal parts: 1/2, 1/3, 1/4, all the way to 1/10.”
Unit fraction — 1 part of a whole split into equal parts, like 1/4.
Half — 1 part when a whole is split into 2 equal parts: 1/2.
Third — 1 part when a whole is split into 3 equal parts: 1/3.
Fourth — 1 part when a whole is split into 4 equal parts: 1/4.
Worked example
A circle is split into 4 equal parts. 1 part is shaded. What fraction is shaded? Step 1: Count the equal parts in the whole: 4. Step 2: Count the shaded parts: 1. Step 3: 1 of 4 equal parts is 1/4 - say it: "one fourth."
Check yourself — explain it
In 1/4, the 4 tells you:
Paired problem — example still visible
A bar is split into 2 equal parts. 1 part is shaded. What fraction is shaded? -> 1/2 (one half)
Faded completion — last step is yours
"A strip is split into 3 equal parts. 1 part is shaded. The shaded part is ___." -> 1/3 (one third)
Ready to practise?
10 scored questions with a 3-rung hint ladder. Mastery needs 8/10 plus both gate questions.