CCSS Geometry (G)
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MG.2.1Math Practices:4, 7Standard: 2.G.1 Cluster (a)Recognize and draw shapes having specified attributes, such as a given number of angles or a given number of equal faces. Identify triangles, quadrilaterals, pentagons, hexagons, and cubes.Essential Skills/ConceptsTeaching Notes/StrategiesResourcesAcademic Vocabulary:* angles* cube* faces* attributes* equal* regular or irregular* triangles* quadrilateral* pentagon* hexagonRecognize shapesDraw shapesUnderstand specific attributes of shapes i.e. angles, faces, sidesDescribe shapesCategorize shapes as quadrilateralsDistinguish between regular (equal sides and angles) or irregular pentagons, triangles and hexagons- Math journal/ record attributes of shapes-Flip books for shapes and their attributes-Write stories with shapes as characters (How will their attributes affect their day to day life?)-Shape sorts-Polygon riddles with Geoboards- Model with Geoboards- Concentration card game (one card has attributes and other card has name or picture of shape)-Build cubes with nets-Board Math-Build shapes with toothpicks and mini marshmallows* Geoboards* Grid paper for drawing* The Greedy Triangle by Marilyn Burns* If You Were a Polygon by Marcie Aboff* If You Were a Quadrilateral by Molly Blaisdell * When a Line Bends . . . A Shape Begins by Rhonda Gowler* Shape Up! by David A. Adler* A Cloak For The Dreamer (Brainy Day Books) by Aileen Friedman* Toothpicks and mini marshmallows*Die-cut for cube netRelated CA StandardNEWMath Practices:2, 6, 8Standard: 2.G.2 Cluster (a)Partition a rectangle into rows and columns of same-size squares and count to find the total number of them.Essential Skills/ConceptsTeaching Notes/StrategiesResourcesAcademic Vocabulary:* rectangle* row* column* totalUnderstand attributes of a rectangleKnow how to make rows and columnsCount or skip count to find totalBoard MathModelingUse cube units to lay on squares to count and transition into drawingFill a paper rectangle with tiles/describe what you notice using vocab.Folding*Grid paper*Cheezits, Starbursts, Pattern block squares, Wheat ThinsRelated CA Standard2. NS.4.3Math Practices:2, 3, 6, 8Standard: 2.G.3 Cluster (a)Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape.Essential Skills/ConceptsTeaching Notes/StrategiesResources* Understand equal parts* Partition (divide) circles and rectangles into 2, 3 or 4 equal shares* Equal shares of identical wholes may not have the same shape* Describe the shares using mathematical vocabularyAcademic Vocabulary:* halves * thirds* half of* third of* fourth (or quarter) of* Partition* Equal shares-Modeling-Board Math-Divide each rectangle/circle into fourths a different way-Divide different sized rectangles/circles into shares-Collaborative conversations- Fold shapes into halves, some into thirds, and some into fourths. Describe what you notice about the portions?-Divide each rectangle into fourths a different way- Modeling/following directions with Geoboards- Real world experience dividing pizza/cake etc.-Experiences to explore this concept with paper strips and pictorial representation* Geoboards*Paper circles/rectangles*Doc cam* Real world samples -pizzas -apples - oranges - etc. ................
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