Page 36 - Beavers: Skilful Dam Constructors

This shape which curves inwards is called concave. All

beaver dams are constructed concavely. We aim to dam
the water at an angle of 45 degrees.

Excited by what Mr. and Mrs. Beaver have told him,
Karim interrupts:

Karim: How do you know that? We went on a trip to
a dam with our teacher, and that day she told us that
modern dams were constructed just like yours. They all

curved inwards. She also told us that thanks to this
While Mrs.
Beaver
explains to
Karim how
they construct
the dam...

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