We will focus on the subtraction part of the Operations and Algebraic Thinking Common Core State Standards this week!
I'm excited to introduce this concept with the picture book "If you were a MINUS SIGN," by Trisha Speed Shaskan.
A math tool that we will get plenty of practice with this week is the number line. This tool is helpful to mathematicians so they can compare numbers as they are found on the number line. The students will make jumps forward and backward on the number line to model addition and subtraction, as well as represent their math using addition and subtraction sentences (equations).
Other strategies students will use are drawing pictures, diagrams, and number combinations.
There are various subtraction situations that the students will be introduced to such as:
I'm excited to introduce this concept with the picture book "If you were a MINUS SIGN," by Trisha Speed Shaskan.
A math tool that we will get plenty of practice with this week is the number line. This tool is helpful to mathematicians so they can compare numbers as they are found on the number line. The students will make jumps forward and backward on the number line to model addition and subtraction, as well as represent their math using addition and subtraction sentences (equations).
Other strategies students will use are drawing pictures, diagrams, and number combinations.
There are various subtraction situations that the students will be introduced to such as:
- Taking Away - Lin has 9 jacks. She gives Tom 4 jacks. How many jacks does Lin have now?
- Comparing - The pond has 4 fish. The fish tank has 2 fish. How many more fish does the pond have than the fish tank?
- Missing Parts - Jesse has 6 red fish. He buys some blue fish. Now he has 8 fish in all. How many of the fish are blue?
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