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During the Fall 2023 semester for math, my partner (Mikaela Wilson) and I created four lesson plans with a unit focusing on addition and subtraction using two two-digit numbers. To start off the unit, we read the story Blast Off! How Mary Sherman Morgan Fueled America Into Space by Suzanne Slade. The read aloud helped develop the central theme of the unit, space! Students took a pre-assessment prior to the start of the lessons. Each lesson was taught with a new concept of addition and subtraction with space and how specifically they could use it at NASA. At the end of the unit, a post-assessment was administered to the students.
Unit Pre-Planning Worksheet (2).pdfPlease Note: This unit plan was created prior to meeting the students of the class, the unit plan quickly shifted after analyzing the data of the students.
Vocabulary:
Number Families (also known as fact families): Four different facts using the same three numbers to create related facts.
Related Facts: Mathematical statements that share the same numbers but use different operations.
Operation: A mathematical process.
Addition: A math operation in which the sum of two or more numbers is calculated.
Subtraction: Taking one number away from another.
Commutative Property: You can add numbers in any order and the answer will be the same.
Inverse: Opposite (the opposite of addition is subtraction and the opposite of subtraction is addition).
Place Value: The value represented by a digit in a number on the basis of its position in a number.
Decomposing: regrouping, borrowing. In column subtraction, when the bottom digit is greater than the top digit, a 10 is traded or borrowed from the top digit in the next column left and that digit is marked down by one.
Composing: In column addition, when the ones add up to more than ten, trading out ten ones for a ten.
MA State Framework: 2.NBT.B.5 . Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
Unit Learning Outcome: Students will be able to independently add and subtract using only two digit numbers.
Pre- Assessment:
Unit Pre-Assessment.pdfUnit Pre-Assessment Analysis Worksheet (1).pdfUnit Lessons Breakdown:
Launching the Relationship Between Addition and Subtraction
Instructional Model: Gradual Release of Responsibility
Learning Outcome: Students will be able to...
Explain why it would be important for scientists at NASA to know the relationship between addition and subtraction.
Recognize the missing number of a number family, and see the relation between addition and subtraction.
Essential Inquiry Question:
Why is the relationship between addition and subtraction important to help solve unknowns or missing pieces?
How can recognizing unknowns help solve addition and subtraction equations?
MA State Framework(s): 2.NBT.B.5 . Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
LESSON
LESSON
Math in the Stars
Instructional Model: Gradual Release of Responsibility in small groups based on level.
Learning Outcome: Students will be able to…
Explain why it would be important for scientists at NASA to subtract within 100 without decomposing tens.
Demonstrate the ability to subtract two-digit numbers with other two-digit numbers without decomposing tens through completion of the collaborative worksheet and exit ticket.
Essential Inquiry Question:
Why is it important to understand place value when it comes to subtracting two-digit numbers without decomposing a ten?
How do the scientists at NASA solve two digit subtraction problems without decomposing a ten?
MA State Framework(s): 2.NBT.B.5 . Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
Alien Connection
Instructional Model: Gradual Release of Responsibility in small groups based on student level.
Learning Outcome: Students will be able to…
Explain why it would be important for scientists at NASA to add within 100 where composing a ten is required.
Demonstrate the ability to add two-digit numbers with other two-digit numbers where composing a ten is required through completion of the collaborative worksheet and exit ticket.
Essential Inquiry Question:
Why is it important to understand place value when it comes to adding two-digit numbers where composing a ten is required?
How do the scientists at NASA solve two digit addition with decomposing a ten?
MA State Framework(s): 2.NBT.B.5 . Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
LESSON
LESSON
Quality Control
Instructional Model: Gradual Release of Responsibility with Review Game
Learning Outcome: Students will be able to…
Explain why it would be important for scientists at NASA to add and subtract within 100 where composing or decomposing a ten may be required, using strategies based on place value and the relationship between addition and subtraction.
Demonstrate the ability to add and subtract two-digit numbers with other two-digit numbers where composing or decomposing a ten may be required, using strategies based on place value and the relationship between addition and subtraction, through completion of the collaborative work and post-assessment.
Essential Inquiry Question: Why is it important to understand place value when it comes to adding or subtracting two-digit numbers where composing or decomposing a ten is required?
How do the scientists at NASA solve two digit addition or subtraction equations with composing or decomposing a ten?
MA State Framework(s): 2.NBT.B.5 . Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
Post Assessment:
Space Post-Assessment.pdfUnit Post-Assessment Analysis Worksheet (2).pdfPage updated
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