Exploring Mathematical Relationships Module 5: Investigation 4

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Presentation transcript:

Exploring Mathematical Relationships Module 5: Investigation 4 Using the Grid World

Exploring relationships within rectangles and between rectangles Module 5: Investigation 4 Activity 5.4.1 – Using the Grid World Activity 5.4.1 Using the Grid World Exploring relationships within rectangles and between rectangles

Module 5: Investigation 4 Activity 5.4.1 – Using the Grid World Use your final 5-Grid World project, or the provided 5-Grid World FINAL project. Use the grid 20 backdrop. A is the base of the rectangle and B is the height. ❶ Draw a rectangle where A = 3 and B = 1. ❷ Draw a rectangle where A = 6 and B = 2. ❸ Add the magic line. ❹ Explore and draw two more rectangles which fit on the magic line. ❺ Does the rectangle where A = 15 and B = 5 fit on the line? Can you explain your answer? ❻ If A = 21, what is the value of B? Explain your answer. ❼ If B = 10, what is the value of A? Explain your answer. ❽ Transfer your answers into the table on Worksheet 1 and complete the calculations.

Module 5: Investigation 4 Activity 5.4.1 – Using the Grid World Use the grid 20 backdrop. A is the base of the rectangle and B is the height. ❶ Construct a rectangle where A = 3 and B = 2. ❷ Construct a rectangle where A = 6 and B = 4. ❸ Add the magic line. ❹ Explore and draw two more rectangles which fit on the magic line. ❺ Does the rectangle where A = 12 and B = 6 fit on the line? Can you explain your answer? ❻ If A = 18, what is the value of B? Explain your answer. ❼ If B = 10, what is the value of A? Explain your answer. ❽Transfer you answers into the table on the Worksheet 2 and complete the calculations.

BridgEing And Solving Problems Module 5: Investigation 4 Activity 5.4.2 – BridgEing And Solving Problems Activity 5.4.2 BridgEing And Solving Problems

Module 5: Investigation 4 Activity 5.4.2 – BridgEing And Solving Problems Use the Grid World to solve the problems, draw diagrams and explain your working. ❶ The two rectangles are proportional (mathematically similar) to one another. Find length x and give a reason for your answer. Two matchsticks have the same length as three bottle tops. Here is a picture of Mr. Short. Mr Short is 4 buttons or 6 paperclips in height. ❸ Mr Tall measures 6 buttons, how high is Mr Tall in paperclips? ❷ How many bottle tops will have the same length as 12 matchsticks?

Module 5: Investigation 4 Activity 5.4.2 – BridgEing And Solving Problems Adam is making a spicy soup for 3 people. He uses 9ml of tabasco sauce. a) Create a rectangle in the Grid World which has a base of 9 and a height of 3. Draw the magic line. b) Davina is making the same soup for 6 people. How much tabasco sauce should she use? [Clue: Draw a rectangle which fits on the magic line and has a height of 6.] c) Find another solution that works (i.e. fits on the magic line). d) What is the relationship between pairs of numbers? e) If Matt is making the same soup for a large party of 30, how much tabasco would he need? f) Tabasco is sold in 57ml bottles. How many people could be served the same spiciness of soup using one bottle? ❹

Module 5: Investigation 4 My Investigation 4 check list: I constructed mathematically similar rectangles in the grid world. I used the “magic line” to find other mathematically similar rectangles. I have explored the relationship of the side lengths within a rectangle and between rectangles for mathematically similar rectangles. I can explain what it means when two rectangles are mathematically similar. I can solve problems which involve proportional relationships.