Ontario Teachers' Manuals: Nature StudyOntario. Department of Education
Science
Ontario Teachers' Manuals: Nature Study
Ontario. Department of Education
Nature study; Science -- Study and teaching (Elementary) -- Ontario
The strong seed cases are opened and the seeds are discovered. The
pupils are instructed to watch the insects that visit the bright
flowers. Name the insects. Describe their movements. Catch a few and
find the yellow powder on their furry little bodies and legs.
II
Each member of the class brings a flower to the school-room. The
varieties of colours of the flowers are discussed. The cave-like form of
each flower is noted. The velvety feeling of the corolla and the
delicate perfume are likewise sensed by the pupils.
The pupils nip off the point of the cave and taste the nectar (honey),
and thus learn why the insects visit the flowers. They next trace the
course of the coloured lines on the corolla and find that they all point
into the cave.
Continuing their explorations of the mouth of the cave, the pupils will
discover the little boxes containing the yellow powder that the flower
dusts upon the insects. The names _pollen_ and _pollen boxes_ are given.
The fringe on the edges of the leaves of the corolla for the purpose of
preventing the insects stealing into the cave without receiving their
baptism of pollen, is discovered.
The teacher should, at this point, give a brief explanation of the
valuable work done by the insects in carrying pollen to cause seeds to
grow in the next flower that the insect visits. The position of the tiny
brush (stigma, but do not give this name) held up by the seed case for
rubbing the pollen off the insect, should also be observed.
~Summary.~--Name and point out the parts of the flower (calyx, corolla,
pollen boxes, seed cases).
What useful work do insects do for the flower?
What reward do they receive for their work?
What advertisements do the flowers put out for attracting themselves?
(Bright colours, sweet perfumes, and honey)
Flowers suitable for lessons in Form II are nasturtium, larkspur,
snap-dragon, morning-glory, and sweet-pea.
NOTE.--Botanical names should be reduced to a minimum.
SOIL STUDIES
(See _Soils_ by Fletcher.)
Soil should have a place in a Nature Study Course because:
1. It is so closely related to life.
2. It lends itself so admirably to the experimental method.
3. It is so liable to be overlooked and considered as common and
valueless.
KINDS OF SOIL
_Gravel_ is composed of small, rounded stones of various colours, sizes,
and shapes. Occurs in beds, generally mixed with sand. Get a sample and
examine the constituents. Lead the pupils to see that the pebbles are
the result of the breaking up of larger rocks. What has made the corners
smooth and rounded? What use is made of gravel? Have the pupils find
some gravelly land.
Public-domain text, read in full here on John Shaqi.
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