Use pattern blocks to visually represent math problems in addition and subtraction. To model number sentences, you need a piece of paper to use as a work mat, a pencil and pattern blocks that have been sorted into shapes.
Addition Number Sentences
Choose two shapes such as green triangles and orange squares. In the center of the work mat, leaving plenty of space for the pattern blocks, write "Triangles + Squares =". Then, count out some triangles and place them above the triangle spot. Next, count out some squares and place them in the square space. Write the number of triangles and squares under the shapes. Count how many squares and triangles that you have altogether and write the total number after the equals sign.
Subtraction Number Sentences
Use pattern blocks to model subtraction in two ways, take away and difference. To model take away, prepare your work mat by writing "Triangles - Triangles =". Count out a number of triangles, place them above the first space and write the number of triangles beneath the shapes. Then, take away a portion of the triangles. Write this number down, count the total remaining and write that number after the equals sign. Next, model difference by choosing two different shapes. Write "Squares - Triangles =" on the work mat. Choose more squares than triangles and write the number of each shape on the work mat. Line up the shapes next to each other and count how many more squares than triangles there are. This is the answer to the subtraction problem.
- Photo Credit Wavebreakmedia Ltd/Wavebreak Media/Getty Images
How to Use Numbers Correctly When Writing
How to Use Numbers Correctly When Writing. Writing numbers is one of the trickiest skills to master in English grammar. Most people...
How to Write a Number Story
Number stories are also called story problems -- perhaps in part because they illustrate how math is used to solve problems in...
How to Create a Block Calendar
Why waste your money on a new calendar every year when you can make one that will last forever? Using materials you...
How to Write Multiplication Sentences for Fourth Grade Math
Perhaps the most important skill for fourth graders is that of multiplication. A key way to teach multiplication is via multiplication sentences....
How to Draw Block Numbers
Block drawing is an artistic technique used most often with letters and numbers to give them shading and dimension. Drawing block numbers...
What Are Subtraction Sentences?
A subtraction sentence is also called a numerical sentence. This sentence shows the process of how the student reaches a solution for...
Kindergarten Number Sentence Activities
Common core standards require kindergarten students to recognize and understand number sentences. In kindergarten, this is limited to simple addition and subtraction...
What Is a Fraction Number Sentence?
A fraction number sentence is defined in a very particular way in the world of mathematics. Learn about a fraction number sentence...
How to Teach Writing Sentences
Teach writing sentences to children by helping them think of each sentence as a thought with an action and recipient on the...