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.
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Formative Assessments
Lesson Plans
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MFAS Formative Assessments
Student are asked to consider why a counting strategy works to solve subtraction problems.
Students are asked to explain each step of an addition problem completed by using the standard algorithm.
Students are asked to explain each step of a subtraction problem completed by using the standard algorithm.
Students are asked to solve a two-digit addition problem using a place value strategy and then are asked to explain why this strategy works.
Student Resources
Tutorials
In this tutorial video from Khan Academy, a subtraction problem is solved which contains two numbers each with two-digits. The video demonstrates subtraction with regrouping using the standard algorithm, as well as a method using expanded form.
Type: Tutorial
In this video tutorial from Khan Academy, explore subtracting two-digit numbers by using the standard algorithm. This video does not include regrouping.
Type: Tutorial
Parent Resources
Tutorials
In this tutorial video from Khan Academy, a subtraction problem is solved which contains two numbers each with two-digits. The video demonstrates subtraction with regrouping using the standard algorithm, as well as a method using expanded form.
Type: Tutorial
In this video tutorial from Khan Academy, explore subtracting two-digit numbers by using the standard algorithm. This video does not include regrouping.
Type: Tutorial