Some invertebrate skeletons are shell structures (crab).
Greet the learners.
Divide the learners into groups of about 6 and give each group a pack of cards.
Each group must try to build a structure with their cards – nothing else may be used to support the structure.
After 5 minutes stop the activity and determine the following:
Which group’s structure is the highest.
Which structure used the most cards.
Which structure (if any) are stable.
Ask learners why it was not an easy task (because there was nothing to support the structure).
Ask learners to name a few structures (buildings, scaffoldings, jungle gym, houses).
Teacher Input 1
Tell the learners they will be learning about:
how to make a model of a vertebrate skeleton using straws and struts (rolled paper).
investigating shell and frame structures (ask learners to discuss what they remember about this topic from Grade 4).
Show Presentation 1, asking learners to pay attention to the shape and material of the various structures.
Take the learners to the jungle gym in your school playground and let them experience climbing, swinging, crawling, etc.
If you do not have a jungle gym at school, set up an obstacle course with chairs, mats, hoops, tyres, etc.
Teacher Input 2
Pretend to be two mystery objects and learners must guess the object:
Teacher : “I am oval, have 3 parts, can be separated, breakable and chefs use me”[egg].
Teacher: “People place fruit / vegetables in me; I am a woven article, sometimes I even have a handle; the first riddle and I have an idiom in common” [basket; do not place all your eggs in one basket].