Math: Revisiting Fair Shares and Equal Partitions

Suggested Time Frame: 12 Instructional Days

        

Focus TEKS

Representing and Counting Fractional Parts (Models, Pictures, and Words – Not Symbols)

  • 2.3B explain that the more fractional parts used to make a whole, the smaller the part; and the fewer the fractional parts, the larger the part
    • 2.3A partition objects into equal parts and name the parts, including halves, fourths, and eighths, using words
    • 2.3C use concrete models to count fractional parts beyond one whole using words and recognize how many parts it takes to equal one whole
    • 2.3D identify examples and non-examples of halves, fourths, and eighths
    • 2.8E decompose two-dimensional shapes such as cutting out a square from a rectangle, dividing a shape in half, or partitioning a rectangle into identical triangles and identify the resulting geometric parts
Computational Fluency TEKS

Two-Digit Addition and Subtraction

  • 2.4B add up to four two-digit numbers and subtract two-digit numbers using mental strategies and algorithms based on knowledge of place value and properties of operations

Skip Counting by 10 and 100

  • RRISD 2.7B Skip count forward and backward by ten and one hundred from any given number between 10 and 1,000
Spiral Review TEKS

Measure Time

  • 2.9G read and write time to the nearest one-minute increment using analog and digital clocks and distinguish between a.m. and p.m.

Representing Numbers up to 999

  • 2.2B use standard, word, and expanded forms to represent numbers up to 1,200 [999 in this unit]
    • 2.2A use concrete and pictorial models to compose and decompose numbers up to 1,200 [999 in this unit] in more than one way as a sum of so many thousands, hundreds, tens, and ones
    • 2.2E locate the position of a given whole number on an open number line
    • 2.2F name the whole number that corresponds to a specific point on a number line
    • 2.7B use an understanding of place value to determine the number that is 10 or 100 more or less than a given number up to 1,200 [999 in this unit]

Comparing Numbers up to 999

  • 2.2D use place value to compare and order whole numbers up to 1,200 [999 in this unit] using comparative language, numbers, and symbols (>, <, or =)
    • 2.2C generate a number that is greater than or less than a given whole number up to 1,200 [999 in this unit]