Natural Sciences and Technology Grade 5-B ... - Thunderbolt Kids

QUESTIONS:
1. What is under the floor of this classroom?
This question is for discussion.
2. Imagine that you use the machine to dig as deep as you want.
You drive it down into the Earth. What do you find as you go
down?
Let the learners discuss this before they write. If they cannot
write, let them draw pictures of what they think they will find
under the Earth.
3. Do a drawing of yourself, the digging machine and the hole.
In your drawing, show (a) the Earth (b) the digging machine
with you inside (c) the hole (d) what you find at the deepest
part of the hole.
Give the learners enough time to think while they do their
drawings.
Look at the learners' drawings but do not correct them. If you
give them the right answer, you will stop them thinking about
the problem. At the end of the Chapter they will get achance
to change their ideas – see Activity: So what is under our feet?
Some learners' drawings might show the hole going down
through soil and rocks and underground water and volcanoes.
Other learners' drawings might not show any of these things;
it depends on how much general knowledge they have by
Grade 5. Correctness does not matter at this stage: we are
raising their curiosity by asking the question "what is deep
down under our feet?"
If they are thinking about that question, then the next section
will make more sense to them.
So what do we find as we dig deeper?
When we begin to dig, we first dig though topsoil. Good topsoil is
usually adark colour.
86 Earth and Beyond