ILC 1st Grade Mathematics: Unit 4 Numbers to 99

This is unit 4 of 8 units. The sequence of units is available in the Read Me First Materials in each unit.

• Section A: Units of Ten
  In this section, students count and represent collections. Students develop an understanding that counting the same group by one or by ten gives them the same number. Through the section, students make sense of base-ten representations (towers of 10, base-ten drawings, words, and numbers).
• Section B: Units of Ten and Units of One
  In this section, students use the same representations from the previous section to make sense of two-digit numbers. 
• Section C: Compare Numbers to 99
  In this section, students compare and order numbers to 99. They use their place value understanding to compare numbers and may recognize that the digit in the tens place is more important than the digit in the ones place when comparing two-digit numbers. Students are introduced to the <, >, and = symbols.
• Section D: Different Ways to Make a Number
  In this section, students dive deeper into place value understanding by breaking apart two-digit numbers using different amounts of tens and ones. The focus of this section is for students to see that there are different ways to decompose a number into tens and ones.