I have been introducing my grade 11 to Sine Formula and its application in triangles. Some of the learners have forgotten the fact that the sum of angles of a triangle is 180 degrees, I quickly had to set up an activity on revising this for 10 minutes. It really was blocking me to continue. As if that was not enough, some students could not find the angle if given one angle and two sides, they have forgotten the use of second/inverse function/ratios in trig equations. I also had to prepare a quick revision of that on the board to remind them on how to solve such problems.
Really maths is demanding, especially with these forgetful students of today.
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