Lesson Plan

• Grade 2
• Semester 2
• Week 5 to 7

Topic: Fractions

“I can” Statements

1. I can demonstrate the equal parts concepts for fractions and recognize that equal shares of identical wholes need not have the same shape (in this video).
2. I can partition circles and rectangles into two, three, or four equal shares (in this video), describe the shares using the words halves, thirds, half of, a third of, etc.,
3. I can describe the whole as two halves, three thirds, four fourths.
4. I can name fractional parts, e.g., 1-fifth of the rectangle means 1 out of 5 equal parts.
5. I can compare sizes of fractions (unit fractions) with denominators not exceeding twelve, e.g., 1/6 is smaller than 1/3.
6. I can add and subtract unit fractions within one whole with denominators not exceeding twelve, e.g 1/3 + 1/3 = 2/3.

Common Core Standards

2.G.A3
Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape.
3.NF.A1
Understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a fraction a/b as the quantity formed by a parts of size 1/b.
3.NF.A3d
Compare two fractions with the same numerator or the same denominator by reasoning about their size. Recognize that comparisons are valid only when the two fractions refer to the same whole. Record the results of comparisons with the symbols >, =, or <, and justify the conclusions, e.g., by using a visual fraction model.

Suggested Workbook Series

1. Math in Focus workbook (2B) Chapter 12 – Fractions (pages 45 to 72)
2. Primary Mathematics workbook Common Core Edition (2B) Chapter 9 – Fractions (pages 98 to 119)

• Please note that unit fractions is introduced in Math and Focus series and Primary Mathematics series in Grade 2, hence there is a little overlap into the Grade 3 Common Core Standards.

Suggested Activities

1. Give examples of fractions in everyday situations and use language such as ‘1-fifth’ to describe one out of 5 equal parts.
2. Use concrete objects, fraction discs and pictorial representations to represent and interpret fractions in terms of unit fractions, e.g. 3/5 is 3 units of 1/5, or 1/5 + 1/5 + 1/5.
3. Use fraction discs to represent and compare two unit fractions and explain why the greater the denominator, the smaller the unit fraction, e.g. 1/6 is smaller than 1/3.
4. Use fraction discs to represent and compare two like fractions (i.e. fractions with the same denominator) and explain why the greater the numerator, the greater the like fraction, e.g. 5/6 is greater than 1/6.
5. Achieve mastery of fraction recognition and comparison by playing games using fraction cards (pictures and symbols), including applets and digital games.