What's Missing?
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This learning activity provided by:
Author:
Michelle Frye
System: Blount County School: Hayden Elementary School
General Activity Information
Activity ID:
2898
Title: What's Missing?
Digital Tool/Resource: What's Missing? - Task Cards
Web Address – URL:
Overview: In this activity, students will practice finding the perimeter of rectangles and rectilinear shapes that have missing lengths. This activity includes a set of 18 task cards and a recording sheet.
Associated Standards and Objectives
Content Standard(s):
Mathematics 25. Solve real-world problems involving perimeters of polygons, including finding the perimeter given the side lengths and finding an unknown side length of rectangles.
Unpacked Content
Evidence Of Student Attainment:
Students:
Measure to find the perimeter of shapes.
Given a figure, determine the perimeter of the figure.
Given a figure with a missing side length and a given perimeter, determine the missing side length.
Solve real-world problems involving perimeters of polygons.
Use a multiplication expression to find perimeter of a polygon when all side measures of the polygon are equal. Teacher Vocabulary:
Attribute
Dimension
Perimeter
Polygon
Two-dimensional Knowledge:
Students know:
Measurable attributes of objects, specifically perimeter.
Strategies for modeling measurement problems involving perimeter.
Strategies for representing and computing perimeter. Skills:
The Students are able to:
Solve real-world and mathematical problems involving perimeters of polygons.
Find the perimeter of a figure given the side lengths.
Find an unknown side length of a polygon given the perimeter and one missing side length. Understanding:
Students understand that:
Perimeter is measured in length units and is the distance around a two-dimensional figure.
If all the sides of a polygon are equal, then the perimeter can be determined by multiplying one side length by the total number of sides. Diverse Learning Needs:
Essential Skills:
Learning Objectives: M.3.25.1: Define perimeter.
M.3.25.2: Recall the formula for perimeter (P= L+L+W+W or P=2L + 2W).
M.3.25.3: Recall basic addition and multiplication facts. M. 3.23.4: Build and draw shapes to possess defining attributes.
M.3.25.4: Express the length of an object as a whole number of length units by laying multiple copies of a shorter object (the length unit) end to end; understand that the length measurement of an object is the number of same-size length units that span it with no gaps or overlaps.
M.3.25.5: Describe measurable attributes of objects such as length or weight.
Prior Knowledge Skills:
Recall doubles addition facts.
Model written method for composing equations.
Alabama Alternate Achievement Standards
AAS Standard:
Learning Objectives: The students will be able to solve real-world problems involving finding the perimeter of polygons.
The students will be able to find the unknown side of a polygon when given the perimeter.
Strategies, Preparations and Variations
Phase: After/Explain/Elaborate
Activity: The teacher will copy the task cards and recording sheet from the file What's Missing? The teacher will display the 18 task cards throughout the classroom. The students will visit each card, determine the missing length, solve for the perimeter of each shape, and move to the next card. The students will record their answers on the recording sheet before moving to the next card. The teacher will review the answers to the task cards at the end of the activity.
Assessment Strategies: The teacher will observe student responses to determine student understanding of the concept and skill. The teacher can use the following guidelines to ensure students meet the learning objective.
Check that the student:
can correctly determine the missing length.
can correctly solve for the perimeter of each shape.
Advanced Preparation: The teacher will need to copy the cards and display them throughout the room. Each student will need a recording sheet, clipboard, and pencil. The teacher will need to determine how he/she wants to have the students move from card to card.
Variation Tips (optional): These cards can be used as quick images for an engage activity or can be used in small group for remediation.
Notes or Recommendations (optional):
Keywords and Search Tags
Keywords and Search Tags:
perimeter
