This week we continued with the Relationships Unit with work on Angles. We did work on angles in a circle in relation to the radius and the tangent to a circle. This is under Library – Shape – Circle Theorems – Circle Theorems – page 7.
Next we did some work recapping the topic done in S3 on Trigonometry with calculating a missing side or finding the angle in a right angled triangle. The class were reminded of the nonsense mnemonic word SOHCAHTOA to enable them to decide which is the correct trigonometric ratio to apply. This was followed by using Pythagoras & Trigonometry in circles, thus tying a number of topics together in terms of reasoning questions.
Having tied all these together, we just had the last topic Scattergraphs to cover which next week will tie in with the work previously covered on Straight Line to discover the line of best fit in a scattergraph. Again more of the reasoning style of question. This is under Library – Data – Presenting Data – Scatter Graphs.
The class were again reminded that the Unit Test on the Relationships Unit will be the week beginning the 2nd December. The pupils should refer to the summary of the topics in each Unit of Mathematics – National 4 to ensure they are clear on what will be in the test. Next week we will do two practice assessments to prepare the pupils for what will be in the test.
