Math Grade 3 Geometry (G) Teacher Key Shapes and Their Attributes Benchmarks that are Measured in this Quizlet Benchmark Code Benchmark Item # 3.SMC.G.1.1-1.b Recognize that shapes in different categories may share attributes, and that the shared attributes can define a larger category 1, 2 3.SMC.G.1.1-2.b Identify examples of quadrilaterals including rhombuses, rectangles, and squares 3, 4 3.SMC.G.1.1-3.b Draw examples of quadrilaterals that are not rhombuses, rectangles, and squares 5, 6 3.SMC.G.1.2-1.c Partition shapes into parts with equal areas 7, 8 3.SMC.G.1.2-2.c Express the area of equally partitioned parts as a unit fraction of the whole 9, 10 3.SMP.5.c Use appropriate tools strategically 10 August 2015 MATH GR3 G QUIZLET 1 Teacher Key NOTES TO TEACHERS This series of Quizlets is meant to be used for classroom formative assessment. Different from tools to evaluate student learning summatively, they are meant to be used by teachers as a part of the instructional process. Some features of these Quizlets are: The Quizlets are fully aligned with the Benchmarks. Each Quizlet is has a variety of item types: multiple choice (MC), multiple response (MR), short response (SR) and performance-based (PB). The Quizlets were created using Microsoft® Word so that they can be modified. Item stems and graphic organizers can be used to create additional assessments that are aligned to the benchmarks. Quizlets can be used to identify benchmarks where students are struggling or identify individual students who need additional learning opportunities. Item Teacher Key: Shapes and Their Attributes Benchmark Code Benchmark Correct Answer Number of Points 1. 3.SMC.G.1.1-1.b Recognize that shapes in different categories may share attributes, and that the shared attributes can define a larger category B, C 2 2. 3.SMC.G.1.1-1.b Recognize that shapes in different categories may share attributes, and that the shared attributes can define a larger category A 1 3. 3.SMC.G.1.1-2.b Identify examples of quadrilaterals including rhombuses, rectangles, and squares A, D, E 3 4. 3.SMC.G.1.1-2.b Identify examples of quadrilaterals including rhombuses, rectangles, and squares D 1 5. 3.SMC.G.1.1-3.b Draw examples of quadrilaterals that are not rhombuses, rectangles, and squares SR 1 6. 3.SMC.G.1.1-3.b Draw examples of quadrilaterals that are not rhombuses, rectangles, and squares SR 2 7. 3.SMC.G.1.2-1.c Partition shapes into parts with equal areas SR 2 8. 3.SMC.G.1.2-1.c Partition shapes into parts with equal areas SR 3 9. 3.SMC.G.1.2-2.c Express the area of equally partitioned parts as a unit fraction of the whole SR 2 3.SMC.G.1.2-2.c Express the area of equally partitioned parts as a unit fraction of the whole PB 8 10. 3.SMP.5.c Use appropriate tools strategically Page 2 MATH GR3 G QUIZLET 1 Teacher Key Explained Answers SHORT RESPONSE EXPLAINED ANSWERS ITEM 5. Quadrilateral Figure (1 points) Benchmark: 3.SMC.G.1.1-3.b Draw examples of quadrilaterals that are not rhombuses, rectangles, and squares Item Stem Responses Use a straight edge to draw a quadrilateral that has no right angles. Parallelogram or Kite or Trapezoid or Diamond Points 1 point for correct figure SHORT RESPONSE EXPLAINED ANSWERS ITEM 6. Trapezoid Figure (2 points) Benchmark: 3.SMC.G.1.1-3.b Draw examples of quadrilaterals that are not rhombuses, rectangles, and squares Item Stem Responses Points 1 point for one set of parallel lines Use your straight edge to draw a trapezoid with a right angle. Figure must have one set of parallel lines, and two 90 degree angles. 1 point for two 90 degree angles SHORT RESPONSE EXPLAINED ANSWERS ITEM 7. Candy Bar (2 points) Benchmark: 3.SMC.G.1.2-1.c Partition shapes into parts with equal areas Item Stem Jan has a candy bar that she wants to share with three friends. Draw lines with a straightedge to show how she could break the candy bar into equal parts so that she and her three friends have the same amount. Responses Points 1 point for 4 parts (reading careful) or 1 point for approximately equal parts Page 3 MATH GR3 G QUIZLET 1 Teacher Key SHORT RESPONSE EXPLAINED ANSWERS ITEM 8. Pizza Slices (3 points) Benchmark: 3.SMC.G.1.2-1.c Partition shapes into parts with equal areas Item Stem Responses Points Michael and Jason ordered pizza. The pizza came in 8 equal slices. They each eat one slice of pizza. Part A Using a straightedge divide the circle, into 8 equal parts to represent the pizza. 1 point for showing approximately 8 equal parts 1 point for shading 2 slices Part B In the circle above, shade how much pizza was eaten. SHORT RESPONSE EXPLAINED ANSWERS ITEM 9. Rectangle Pieces (2 points) Benchmark: 3.SMC.G.1.2-2.c Express the area of equally partitioned parts as a unit fraction of the whole Item Stem Responses Using the diagram below, write the fraction of the unshaded portion of the rectangle. 4 6 Page 4 or 2 3 Points 1 point for correct numerator 1 point for correct denominator MATH GR3 G QUIZLET 1 Teacher Key PERFORMANCE-BASED RUBRIC ITEM 10. Polygon Fraction (8 points) Benchmark: 3.SMC.G.1.2-2.c Express the area of equally partitioned parts as a unit fraction of the whole Benchmark: 3.SMP.5.c Use appropriate tools strategically Item Stem: Level Criteria Part A In the space provided below do the following. In addition to the understanding in Level 3.0, the student 4.0 Step 1 Use a ruler to draw a polygon (examples: square, rectangle, pentagon, exhibits in-depth inferences and applications that go (7-8 hexagon or other figure). Points) beyond what was taught. Step 2 With the ruler divide the polygon into five equal parts. Do your best to make the parts equal. The student exhibits no major errors or omissions at third Step 3 Shade in 2 5 of the area of the polygon. Step 4 Draw dots in 1 5 of the area of the polygon. Do not draw dots in an area that is shaded. 3.0 (5-6 Points) grade level by: 3.SMC.G.1.2-2.c Dividing the polygon into five equal sections AND correctly identifying the portion without 2 shading or dots is . Part B What fraction of the polygon has neither dots nor shading? Possible Responses: Parts A Steps 1 ‒ 4 (answers will vary) 2.0 (3-4 Points) 5 3.SMP.5.c Correctly using a ruler to create a measured polygon with straight sides and with equal divisions. The student exhibits major errors or omissions regarding the more complex ideas and processes, but makes no major errors or omissions regarding the simpler details and processes at third grade level, including: 3.SMC.G.1.2-2.c Dividing the polygon into five equal sections OR correctly identifying the portion without 2 shading or dots is . Part B 2 5 of the rectangle is not shaded. 1.0 (1-2 Points) 0.0 (0 Points) Page 5 5 3.SMP.5.c Using a ruler to draw straight sides of an approximate simple polygon and approximately divides the polygon without measuring. With help, the student demonstrates partial understanding of some of the score 2.0 elements and some of the score 3.0 elements at the third grade level. Even with help, the student demonstrates little understanding of skills.