Course Guide - USAID Teacher Education Project

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Unit 2 AlgebraWeek 2, Session 2: Continuous Graphs, Multiple Representations1. What are the important concepts?a) The appearance of a graph can imply a story of change.b) Change on a graph is shown in certain intervals.c) Some continuous graphs are composed of only one straight line, which shows alinear function.Tables can also show this by having a constant “first difference” between consecutivey values.2. How do children think about these concepts?a) Many youngsters think that graphs are simply a mathematical arrangement ofpoints and lines on a grid, done for their maths teacher, and created in a proceduralmanner. To help them expand their thinking about graphs, it is important that theyanalyse graphs that do not look like this abstract textbook illustration (which is noteven presented on a coordinate plane):Using graphs such as the water level and marathon graphs, allows them to think abouthow a graph can be interpreted to tell a story of real world events.
) Similarly, because algebraic graphing is often introduced in a unit on linearfunctions, youngsters may assume that algebraic graphing is just a matter of drawing astraight line between two points, and that all algebraic graphs are "line graphs."c) By using multiple forms of representation, youngsters who formerly had thisvision of algebraic graphs can begin to see important connections between diagrams,tables, graphs, equations, and written and oral narratives.Although all of these representations can model the mathematics in real worldsituations, the most important reason for using multiple representations is to illustratea mathematical connection. When students realize this, they begin to understand thepower of algebra more deeply.d) When entering data into a table of values (T-chart), youngsters often createcolumn headings that use the first initial of the variable. Thus, when exploring therelationship between the side length of a square and its area, they may label the firstcolumn "s" and the second column "A." At some point youngsters need to generalizethe idea of the variable and understand why those columns are conventionally labeled"x" and "y."This becomes especially important when students have access to graphing calculators(either hand-held or on the Internet at: http://tinyurl.com/Graph-Calc-Free)because calculators only accept x and y as variables (unless a hand-held one has beenprogrammed with a specific formula).3. What is essential to know or do in class?a) Introduce the idea that a graph can be interpreted to tell a story of change overtime.b) Have students use the real world context of increasing and decreasing ingredientsin a recipe to illustrate the difference between a discrete and continuous graph.c) Have students develop a symbolic expression that could show the relationshipbetween x and y.d) Have students discuss the connections among all the various representations usedin solving the problem.
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This product has been made possible
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Subject: General MathematicsCredit
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Semester OutlineUnit 1: Numbers and
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Suggested Resources:These resources
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Unit 1 Number and OperationsWeek 1,
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Recall the various models of additi
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prepare for the this class session.
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Faculty Preparation for Upcoming We
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h) The number line model, used earl
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they would have placed the remainin
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2. How do children think about thes
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) Introduce the array or set model.
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g) End the class by posing a challe
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• The same is true for the follow
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• Fact Families: Just as (5, 7, 1
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The answer to 9 ÷ 5 is 1.8 or 1 4/
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Page 42 and 43: 5. AssignmentsDistribute this hando
Page 44 and 45: or repeating (such as 1/3’s equiv
Page 48 and 49: 10. Class Activitiesa. Have student
Page 52 and 53: these pre-service teachers will nee
Page 54 and 55: . Have students devise ratio proble
Page 56 and 57: e. Rate problems in the real world
Page 58 and 59: vii. Ask them if there is a consist
Page 60 and 61: Unitt 1 Number and OperationsWeek 5
Page 62 and 63: • It is also important that stude
Page 64 and 65: 5. Assignment:l. Have students revi
Page 66 and 67: 2. To model the equation (-4) + (+2
Page 68 and 69: d. Introduce the idea of directiona
Page 70 and 71: It is also important for students t
Page 72 and 73: considered negative if today were a
Page 74 and 75: Session 2: Algebra as generalized a
Page 76 and 77: Unit 2 AlgebraWeek 1, Session 1: Pa
Page 78 and 79: d) Introduce the idea of a pattern
Page 80 and 81: Later, when y is replaced by functi
Page 82 and 83: Unit 2 AlgebraWeek 1, Session 3: Th
Page 84 and 85: • The idea of a pattern rule• T
Page 86 and 87: Students may also need to refresh t
Page 88 and 89: d) Help students understand how to:
Page 92 and 93: 4. Class Activitiesa) Begin the ses
Page 94 and 95: Unit 2 AlgebraWeek 2, Session 3: Eq
Page 96 and 97: Ask if they saw "first differences"
Page 98 and 99: Unit 2 AlgebraWeek 3: Linear Functi
Page 100 and 101: Unit 2 AlgebraWeek 3, Session 1: Li
Page 102 and 103: Unit 2 AlgebraWeek 3, Session 2: Li
Page 104 and 105: students use crayons or coloured pe
Page 106 and 107: Unit 2 AlgebraWeek 3, Session 3: Or
Page 108 and 109: g) Extend the discussion about C =
Page 110 and 111: Session 2 continues the idea of mul
Page 112 and 113: c) Leave plenty of time to discuss
Page 114 and 115: Unit 2 AlgebraWeek 4, Session 2: In
Page 116 and 117: c) Have students work in pairs for
Page 118 and 119: d) As in the cartoon below, youngst
Page 120 and 121: Faculty Preparation for Upcoming We
Page 122 and 123: 3. Class ActivitiesHere are some sa
Page 124 and 125: Unit 3 GeometryWeek 1, Session 2: C
Page 126 and 127: Again, listen to the way students a
Page 128 and 129: \• Quadrilateral Venn Diagram: ht
Page 130 and 131: figure EFGH."d) Knowing that corres
Page 132 and 133: g) Note that certain polygons inclu
Page 134 and 135: "For example, suppose a triangle ha
Page 136 and 137: Make sure students realize that a s
Page 138 and 139: Session 2: Angle Sums in Polygons,
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Unit 3 GeometryWeek 2, Session 1: A
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c) Angles can be categorized by mea
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2. How do children think about thes
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This is where the activity, ripping
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than 180°are called reflex angles,
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Unit 3 Geometry,Week 2, Session 2:
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e) There is an angle of 360° aroun
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4) Using the angle sum formula:http
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e) Still other tessellations can be
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d) Children can design their own te
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To finish this activity, distribute
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life situations every day. Therefor
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However, this formulaic model does
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Unit 3 GeometryWeek 3, Session 2: G
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4. Class ActivitiesThese will inclu
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d) Have students chart the results
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Once again students will derive for
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) Have students measure around cyli
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d) After students share their direc
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c) Have students work with boxes an
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Students will extend this understan
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Unit 3 GeometryWeek 5 Session 1: Ge
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Unit 3 GeometryWeek 5, Session 2: S
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Unit 3 GeometryWeek 5, Session 3: I
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Session 3: Displaying Data in the E
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Unit 4 Information HandlingWeek 1,
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time.) Mention that these types of
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Unit 4 Information HandlingWeek 1 S
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How many pets does each icon stand
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line plot to display data accuratel
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3. What is essential to know or do
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Read through the plans for this wee
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Usually, when looking at a line plo
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e) Once youngsters know that there
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Perhaps in students' name length da
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Unit 4 Information HandlingWeek 2 S
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e) A data set that includes negativ
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In situations where the data is ske
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End of Course ReflectionDuring this
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Course Guide - USAID Teacher Education Project

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