Learning Activity

Three Addends Assessment

Subject Area

Mathematics

Grade(s)

1

Overview

This activity is intended to be used as an assessment of students' ability to solve problems with three addends. The assessment includes a word problem and a performance task. The problems provide an opportunity for students to demonstrate an understanding of the properties of addition. 

Mathematics (2019) Grade(s): 1

MA19.1.2

Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20 by using concrete objects, drawings, or equations with a symbol for the unknown number to represent the problem.

Unpacked Content

UP:MA19.1.4

Vocabulary

  • Addend

Knowledge

Students know:
  • The relationship between addition and subtraction.
  • how to explain subtraction as an unknown addend.

Skills

Students are able to:
  • use symbols such as blanks, boxes, or letters to represent unknown quantities in equations.
  • Communicate the connections between subtraction and addition.
  • Use the inverse relationship between addition and subtraction to find differences.
  • Choose and apply addition and subtraction strategies to accurately determine sums and differences within 20.

Understanding

Students understand that:
  • addition and subtraction have an inverse relationship that can be used to solve problems.
Mathematics (2019) Grade(s): 1

MA19.1.3

Apply properties of operations as strategies to add and subtract.

Unpacked Content

UP:MA19.1.3

Vocabulary

  • Commutative property of addition
  • Associative property of addition
  • Identity property of zero for addition

Knowledge

Students know:
  • addition and subtraction strategies.
  • how to form an equation.
    • li>how the commutative property works.

Skills

Students are able to:
  • Strategically apply properties of addition in order to find sums.

Understanding

Students understand that:
  • the order in which addends are joined doesn't change the sum.
  • numbers may be composed or decomposed in a variety of ways.

Phase

After/Explain/Elaborate
Learning Objectives

Learning Objectives

Students will be able to solve word problems with three addends using objects, drawings, equations, or properties of addition.

Activity Details

  • Give each student a copy of the assessment and 12 counters.  (Providing only 12 counters for each student will encourage the use of more advanced representational strategies for solving the first problem.)
  • Read the first problem to the students and allow them to solve the problem. Encourage them to use models and/or equations to solve.
  • Read the second problem to the students. Students may use the counters to solve. As students are working, circulate and observe to see if students are using any patterns in their equations (such as 3+4+5 and 3+5+4) that indicate an understanding of the properties of addition.
  • Collect the assessments and evaluate student models and responses.
Assessment Strategies

Assessment Strategies

Students should draw a model and/or write an equation to solve the first problem, arriving at the correct answer of 15 animals.

Student answers for the second problem will vary, but all should add to equal 12. Look for evidence of students' use of the properties of addition while creating equations (rearranging addends, friends of 10, doubles, etc.).

Variation Tips

Students may work with partners for extra support. 

Related Learning Activities

Learning Activity (Before)

Triple Fun Shopping (Addition Task)

Learning Activity (During)

Letter Tile Addition

Learning Activity (After)

Three Addends Assessment

Background and Preparation

Background / Preparation

Print and copy the assessment for each student.

Each student will need 12 counters.

Digital Tools / Resources

Three Addends Assessment
https://docs.google.com/document/d/1qLMXANvTPEhyNC14lmMNwA6OMvOEFT1t9gYWFkqB0KM…

Approved Date

Owner (Author)

seasley
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