Clusters should not be sorted from Major to Supporting and then taught in that order. To do so would strip the coherence of the mathematical ideas and miss the opportunity to enhance the major work of the grade with the supporting clusters.
Related Standards
Related Access Points
Access Points
Related Resources
Educational Games
Educational Software / Tools
Formative Assessments
Lesson Plans
Original Student Tutorial
Tutorials
Student Resources
Original Student Tutorial
Explore strategies to add or subtract ten from a two-digit number in this interactive tutorial.
Type: Original Student Tutorial
Educational Game
Fly high in a hot air balloon and catch the jet stream to go faster! Use addition to add hot air, and see if you can win against other students!
This is a single level basic version. Teachers can register for additional levels for practicing subtraction, multipiication and division.
Type: Educational Game
Educational Software / Tools
This interactive Flash applet helps children learn grouping, tally marks, place value, addition, and subtraction. Students help the alien spaceship move cows into corrals by counting by 5s and 10s. They also can apply those grouping skills to practice adding and subtracting two-digit numbers with regrouping. Audio cues and prompts reinforce the user's actions and facilitate counting and the development of math language.
Type: Educational Software / Tool
A printable hundreds chart featuring a 10x10 table numbered 1 to 100. (found on Illuminations website under "Trading for Quarters")
Type: Educational Software / Tool
Tutorials
In this tutorial video from Khan Academy, explore adding two-digits numbers with base ten blocks and connect this to the standard algorithm. The examples do not include regrouping.
Type: Tutorial
In this tutorial video from Khan Academy, explore how making a ten can help to make thinking about addition easier. This video includes an example of adding a one-digit number to a two-digit number by decomposing the one-digit number.
Type: Tutorial
In this video tutorial from Khan Academy, explore the connection between place value and subtraction. This video explains how to solve a subtraction problem with numbers less than one hundred using base ten blocks.
Type: Tutorial
Learn how to subtract 4 from 46 by thinking about place value.
Type: Tutorial
Learn how to add 23 + 30 by thinking about place value.
Type: Tutorial
Parent Resources
Educational Software / Tools
This interactive Flash applet helps children learn grouping, tally marks, place value, addition, and subtraction. Students help the alien spaceship move cows into corrals by counting by 5s and 10s. They also can apply those grouping skills to practice adding and subtracting two-digit numbers with regrouping. Audio cues and prompts reinforce the user's actions and facilitate counting and the development of math language.
Type: Educational Software / Tool
A printable hundreds chart featuring a 10x10 table numbered 1 to 100. (found on Illuminations website under "Trading for Quarters")
Type: Educational Software / Tool
Tutorials
In this tutorial video from Khan Academy, explore adding two-digits numbers with base ten blocks and connect this to the standard algorithm. The examples do not include regrouping.
Type: Tutorial
In this tutorial video from Khan Academy, explore how making a ten can help to make thinking about addition easier. This video includes an example of adding a one-digit number to a two-digit number by decomposing the one-digit number.
Type: Tutorial
In this video tutorial from Khan Academy, explore the connection between place value and subtraction. This video explains how to solve a subtraction problem with numbers less than one hundred using base ten blocks.
Type: Tutorial
Learn how to subtract 4 from 46 by thinking about place value.
Type: Tutorial
Learn how to add 23 + 30 by thinking about place value.
Type: Tutorial