Areas and Perimeters: Grade 6

Transcription

1 Areas and Perimeters: Grade 6 calculate with areas and perimeters draw a shape with a given area and perimeter Based on these, credit f specific aspects of perfmance should be assigned as follows Gives the crect answer as: A and C have the same perimeter. section Gives the crect answer as: inches. Gives crect answer as: B and C have the same area. Gives crect answer as: 6 square inches. Draws a shape with area 9 sq. in. and perimeter of 4 in. There are many shapes that would have these dimensions. F example (each square represents one square inch). (Hint: Start with a x 4 rectangle (perimeter 4) then remove squares until the area is 9 squares) Partial sce Either Draws a shape different from A with area 9 sq. in. Draws a shape different from B with perimeter of 4 in. Total Points () () 9 MARS 000 Page Fm 6A

2 The Number Cruncher: Grade 6 relate function rules and pairs of values Based on these, credit f specific aspects should be assigned as follows section 4 5 Gives a crect answer such as: Tuesday's rule is - Add Gives a crect answer such as: Wednesday's rule is - Multiply by Gives a crect answer such as: Thursday's rule is - Subtract 8 Gives a crect answer such as: Friday's rule is - Divide by 5 Gives a crect answer such as: Saturday's rule is - Multiply by then subtract Accept alternative crect verbalisations of the rules. e.g. Saturday's rule is - Double the number and take away. 5 6 Writes down a rule Check that at least one pair of numbers is crect using the rule written down. 7 Gives crect answers as: Monday's answers are Total Points 0 MARS 000 Page Fm 6A

3 Choosing a Cube: Grade 6 wk with probabilities Based on these, credit f specific aspects of perfmance should be assigned as follows. Gives the crect answer as: Glia section. Gives a crect explanation, such as: Marco has not used the total number of cubes in his denominat. An equivalent statement. Gives the crect answer as: 8 Accept: Eight out of eleven.. Gives crect answer as: black cubes, 8 white cubes ( any pair of multiples of and 8) 4. Gives crect answer as: 6 black cubes, 6 white cubes ( a different pair of multiples of and 8 which is larger than in question ) Allow follow through from the values given in question. Total Points f t 5 MARS 000 Page Fm 6A

4 Cans of Kola: Grade 6 section Gives crect answer such as: Yes. She is finding the cost of 6 cans from each of the packs. Gives crect explanation such as: $.60 means dollar and 60 cents $.6 means dollar and 6 tenths of a dollar = dollar and 60 cents $.06 means dollar and 6 hundredths of a dollar = dollar and 6 cents. 6 cans from the 4 pack are cheapest/ the best buy. Gives crect explanation such as: The cheapest cost of 4 cans = $4.4 With 0% off the cost of 4 cans = $.8 Six cans cost $.60. With 0% off the cost of 6 cans = $.44 Total cost of 0 cans = $5.6 The student may reduce the total price by 0%: The cheapest cost of 0 cans /4 pack + 6 pack = $5.84 Finds 0% of the cheapest cost of 0 cans Finds that the cheapest cost with 0% off = $5.6 Total Points 4 ft 8 MARS 000 Page 4 Fm 6A

5 Ice Cream: Grade 6 Section construct a block graph from data interpret graph and calculate mean values. Based on these, credit f specific aspects of perfmance should be assigned as follows: Number of people Strawberry Vanilla Pistachio Chocolate Gives the crect answer as: The heights of bars f chocolate should be:, 7,,, 8 Partial sce: Deduct point f each counting err graphing err (up to deductions). Gives the crect answer as: Pistachio:.9 Partial sce: If student has crect method but has made an arithmetic err. 87 = (8x) + (6x) + (4x) + (5x4) + (7x5) Gives the crect answer as: Chocolate:.6 Partial sce: If student has crect method but has made an arithmetic err. 08 = x + 7 x + x + x x 5 () () 4 Gives the crect answer as: Chocolate (based on crect table) follow through largest mean from student s own table. Total Points 8 MARS 000 Page 5 Fm 6A

6 MARS 000 Page 6 Fm 6A