Numbers and Operations in Base TenVideo Lessons

Understand place value (major work)

Big Ideas: Skip counting by fives and tens is important in counting and using money. Skip counting can be used to add the same numbers together multiple times. This task asks students to apply what they know about skip counting to money. This gives stud...

Big Ideas: Numbers can be written in multiple forms. Expanded form focuses on the values of the digits in standard form numbers. In this lesson, students will be writing numbers in various forms based on scoops of candy from a candy store. Candy scoops ...

Big Ideas: Numbers can be written in multiple forms. The expanded form of a number shows the value of each digit. In this lesson, students will be converting numbers written in expanded form into their standard forms. By focusing on the values of each d...

Big Ideas: Numbers can be compared using symbols. Every digit in a number has a specific value. In this lesson, students will be ordering numbers from greatest to least and from least to greatest and compare using symbols (,=). Many of the numbers chose...

Big Ideas: Skip counting can be used to extend a pattern from any number. In order to quickly compute numbers, students need to be able to identify and extend a pattern using skip counting. Building early number sense will open their minds to recognizin...
Use place value understanding and properties of operations to add and subtract (major work)

Big Ideas: Numbers can be decomposed and recombined different ways to add and subtract. There are many solutions to the same problem. This lesson builds on students' understanding of composing and decomposing numbers as strategies to add and subtract. T...

Big Ideas: Numbers can be decomposed into smaller units and the smaller units can be reorganized to make equivalent numbers. Concrete models or drawings can be used to represent addition or subtraction within 1000. In this lesson, students will add with...