# All Lessons

### Identify the Place & Value of Digits in a Number

### Rewrite Numbers

1.NBT.2 Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:

1.NBT.2.A1.NBT.2.A 10 can be thought of as a bundle of ten ones — called a "ten."

1.NBT.2.B1.NBT.2.B 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.2.C1.NBT.2.C 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).

This number and operations in base ten lesson covers how to rewrite numbers. The lesson includes research-based strategies and strategic questions that prepare students for assessments. In this lesson, students are asked to read the number, represent it in dots if needed, and group the dots into groups of ten. Then, they rewrite the number and interpret it in words.

### Compare Two-Digit Numbers Using Symbols

### Compare Two Numbers (No Symbols)

This number sense lesson focuses on comparing two numbers. The lesson includes research-based strategies and questions that help prepare students for assessments. In this lesson, students identify two numbers on a number chart. Then, they identify which number is smaller and which number is bigger. In addition to the lesson, there are four pages of Independent Practice and review with questions modeled after current adaptive testing items.

### Count by Fives

This number sense lesson focuses on counting by fives. The lesson includes research-based strategies and questions that help prepare students for assessments. In this lesson, students use a chart to help count by fives and fill in the missing numbers. Then, students read the missing number pattern three times. In addition to the lesson, there are 11 pages of Independent Practice and review flashcards with questions modeled after current adaptive testing items.

### Count By Twos

This number sense lesson focuses on counting by twos. The lesson includes research-based strategies and questions that help prepare students for assessments. In this lesson, students use a chart to help count by twos and fill in the missing numbers. Then, students read the missing number pattern three times. In addition to the lesson, there are 14 pages of Independent Practice and review flashcards with questions modeled after current adaptive testing items.

### Identify Groups of Tens (Place Value)

1.NBT.2 Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:

1.NBT.2.C1.NBT.2.C 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).