Assessment guidelines


• Use the checklist below to assess learners. Give learners feedback on their performance to prepare them for formal assessment. Criteria


Yes


The learner(s): made at least two sketches of frame structures. made at least two sketches of frame structures. added headings and labels to sketches.


Activity 3 Identify forces Learner’s Book page 16 Guidelines to implement this activity


• This is an individual activity. • Learners copy and complete the table.


Background knowledge • Tension is the exact opposite of compression; it pulls things apart. • Compression is a force which squeezes something. • A twisting force is known as a torsion force.


Suggested answers Force Compression Effect


Push (The mattress dips, but returns when the person gets up.)


1 Tension 2 Bending 3 Torsion 4 43


Twist (If the twist is too much or continuous, the ruler will break.)


Bend (If the bend is too much, the ruler will break.)


Pull (If the force becomes too big, the rope will break and pull apart.)


Partly No


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