Color-coded blocks allow students to decipher between hundreds, tens and ones when building numbers.
- A hands-on way to teach place value and base ten concepts
- Allows students to create and manipulate actual numbers
- Can be used in a center or as a teacher-led activity
- Help students learn numbers up to the hundreds place in numerical form, word form and expanded form
*200 blue ones units (7/8" cubed)
*20 red base ten rods (7/8"Sq. x 3-7/8"L)
*10 yellow flats of one hundred (3-7/8"Sq. x 7/8"H)
K-3 Core Standards
- 1.NBT.B.2a 10 can be thought of as a bundle of ten ones - called a "ten."
- 1.NBT.B.2b The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.
- 1.NBT.B.2c The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).
- K.NBT.A.1 Compose and decompose numbers from 11 to 19 into ten ones and some further ones, e.g., by using objects or drawings, and record each composition or decomposition by a drawing or equation (such as 18 = 10 + 8); understand that these numbers are composed of ten ones and one, two, three, four, five, six, seven, eight, or nine ones.
- 1.NBT.A.1 Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral.
- 1.NBT.B.3 Compare two two-digit numbers based on meanings of the tens and ones digits, recording the results of comparisons with the symbols >, =, and <.