Transcript 20 yards
Fourth Grade CCSS Content Topic March Math Practice #7 – Look for and Make Use of Structure Geometry Draw and identify lines and angles, and classify shapes by properties. Geometry - Standard 2 Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a specified size. Recognize right triangles as a category, and identify right triangles. The students in Mrs. Miller’s 4th grade class share the playground shown below. The girls and boys decide to split the playground equally. The boys label their section with the letter B. 20 yards Highlighted Problem 10 yards Part 1 - What is the area of the girls’ playground? Part 2 – Name the shape of the boys’ playground using all the geometric terms that apply. Part 3 - Suppose the playground is separated into 2 congruent triangles. What type of triangles are formed? What is the area of the girls’ playground? 20 yards Part 1 10 yards Area = Base X Height What is the area of the girls’ playground? 20 yards Part 1 10 yards Z Y W X U V Area = Base X Height What is the area of the girls’ playground? 20 yards Part 1 10 yards Z Y W X U V Area = Base X Height What is the area of the girls’ playground? Z Part 1 10 yards W U 20 yards 20 yards 20 yards Area = 20 X Height Y X V The students in Mrs. Miller’s 4th grade class share the playground shown below. The girls and boys decide to split the playground equally. The boys label their section with the letter B. Z 20 yards Y 5 yards Part 1 10 yards W 20 yards X 5 yards U 20 yards Area = 20 X 5 V The students in Mrs. Miller’s 4th grade class share the playground shown below. The girls and boys decide to split the playground equally. The boys label their section with the letter B. Part 1 5 yards 20 yards Area = 20 X 5 or 100 square yards Name the shape of the boys’ playground using all the geometric terms that apply. 2 1 PART 2 3 4 The boys’ playground is a polygon, a quadrilateral, a parallelogram and a rectangle. Suppose the playground is separated into 2 congruent triangles. What type of triangles are formed? PART 3 Right triangles are formed