Page 36 - Beavers: Skilful Dam Constructors
P. 36

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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