# Table 15 Recording sources in maths lesson, junior secondary

Role Sourcing Source Interact Act
A
1 OK, Step 3, let’s use this information and draw this diagram dK1 Locate Expression Suggest Activity
[draws right angle triangle] K1 Draw Diagram Impart Knowledge
[labels sides and angles]   Write Labels
2 OK, Let’s label angle L as theta. dK1 New Teacher Suggest Activity
[Step3: Label L - L = ø] K1 Write Expression Impart Knowledge
[labels angle with L and ø]   Write Labels
3 Step 3: Write down all the information that is given in the question. And put all this information into a diagram. K1 Recast Expressions, Diagram
[points to diagram]   Point Diagram
B
4 Step 4. K1 New Teacher
[Step 4:]   Write Note
5 Since this is a trigonometry question we’re going to dK1 Classify Text Direct Activity
write down all the trig ratios related to the question.   New Teacher Impart Knowledge
[points to diagram]   Point Diagram
6 We’ll write down sine theta, cos theta and tan theta. dK1 Restate Lesson Direct Activity
[lists on fingers]
7 So looking from the sine of theta, K1 Restate Move Direct Perception
[Sin ø =]   Write Expression
sine theta is equal to   Rephrase Expression Impart Knowledge
[points to diagram]   Point Diagram Direct Attention
opposite   Restate Lesson Impart Knowledge
[points to opposite line]   Point Diagram Direct Attention
divided by hypoteneuse.   Restate Lesson
[points to hypoteneuse]   Point Diagram Direct Attention
8 Therefore MN K1f Read Label Model Reasoning
[Sin ø = MN]   Write Expression
divided by   Rephrase Expression
[points to hypoteneuse]   Point Diagram Invite Attention
hypoteneuse   Restate Lesson
[Sin ø = MN/9.2]   Write Expression
which is 9.2.   Rephrase Label