Geometry Partition circles and Students will recognize Ask your to the "part-whole" Grade 1 rectangles into tow partition circles and relationship in Standard 3 and four rectangles into 2, 3 or 4 representations of basic (1.G.3) shares, describe the equal sizes. Help them fractions such as 1⁄2 shares using the to understand that if an and 1⁄4 and be able to words halves, item is partitioned into match the spoken, fourths, and two equal sections they written, concrete, and quarters, and use are called halves; 3 pictorial the phrases half of, equal sections are representations of fourth of, and called thirds, four whole numbers, one- quarter of. equal sections are half, and one-fourth. Describe the whole called fourths. Two Hexagons (and other as two of or four of halves make a whole, easily partitioned shapes. Understand three thirds make a shapes) provide a for these examples whole, and four fourths wonderful opportunity that decomposing make a whole. Allow to introduce such into more equal them to see that you fractional concepts. shares creates can have half of one Mastery of this skill smaller shares. item and half of later prepares them for another different item more sophisticated and they may not be explorations with the same size. fractions.
Geometry Grade 1 Standard 3 (1.G.3) Partition circles and rectangles into tow and four shares, describe the shares using the words halves, fourths, and quarters, and use the phrases half of, fourth of, and quarter of. Describe the whole as two of or four of shapes. Understand for these examples that decomposing into more equal shares creates smaller shares. Students will recognize the "part-whole" relationship in representations of basic fractions such as 1⁄2 and 1⁄4 and be able to match the spoken, written, concrete, and pictorial representations of whole numbers, one- half, and one-fourth. Hexagons (and other easily partitioned shapes) provide a wonderful opportunity to introduce such fractional concepts. Mastery of this skill later prepares them for more sophisticated explorations with fractions. Ask your to partition circles and rectangles into 2, 3 or 4 equal sizes. Help them to understand that if an item is partitioned into two equal sections they are called halves; 3 equal sections are called thirds, four equal sections are called fourths. Two halves make a whole, three thirds make a whole, and four fourths make a whole. Allow them to see that you can have half of one item and half of another different item and they may not be the same size.
1st-Grade-Math-WORD.docx