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Deployment Team/Resources/GuideXOGabon (view source)
Revision as of 17:49, 6 May 2009
, 17:49, 6 May 2009no edit summary
===Activity Ruler===
====Activity Summary====
The activity Ruler offers a collection of metric tools that can be printed or used
directly on the screen. The student can make the geometry through measurement of
length, angles and calculations of areas and perimeters. The teacher may need to
print rules, rapporteurs (half circle), leaves and leaf grid
millimeter.
====Affordances of the activity====
* Students can measure the length of an object (pen, pencil, phone
portable).
* Students can measure an angle formed by two rods for example.
* Students can calculate the areas of squares, rectangles on a grid.
* Students can use grid sheets to make plans and draw
graphics.
====Degree of centrality of the activity====
Measuring length and angles, the calculation of areas and perimeters of squares and
rectangles are skills required for students in the fourth grade. The use
Ruler of the activity presents a high degree of centrality.
====Application pédagogique 1====
====''Measuring length and angles''====
''Level (s)'': 4th grade of primary
''Knowledge'': The perimeter of a shape or object and the angle.
''Savoirfaire'':
Calculate the perimeter and measure the angle.
''History'':
The teacher asks students to launch the Ruler and select the first frame.
With the rule that is on their screen, they must measure the lengths of small objects
in front of them.
He asked them to select the second view and use the rapporteur at
screen for measuring angles formed by two rods, two pens.
====Application pédagogique 2====
====''Discover formulas perimeter and area, use these formulas to make
calculations''====
''Level (s)'': 4th grade of primary
''Knowledge'': The perimeter and area
''Savoirfaire'':
Making the calculations of perimeter and area
''History'':
Students are invited to start the activity Ruler, click on the tab and select Ruler
the third tool.
<image Ruler grid>
On this grid, they must identify a square and discover the formula for the perimeter of this
square by counting the number of subdivisions on each side. They will then identify
Other squares in which they will calculate the perimeter using the formula found.
On this grid, they must also identify a rectangle and find the formula for the perimeter
of this rectangle by counting the number of subdivisions on each side. They will then
identify other rectangles which they will calculate the perimeter using the formula
discovery.
The second phase is to identify on a square grid and calculate its area in
counting the number of small squares that are inside the square. The child discovers
Thus the formula for the area of the square. With this formula, students will identify other
squares and calculate their areas.
They will take the same approach to discover the formula for the area of a rectangle
and use the same formula to calculate the areas identified other rectangles.
====User Guide of the Ruler====
You can access the Ruler by clicking on the icon of a rule in the run home.
<image Home view>
Once in the activity, click on the Ruler to display the different tools
measure available.
<image Ruler toolbar>
Changing the tools by clicking on the icons shown above.
It is possible for the teacher to print these tools by making a catch
screen by pressing the keys 1 Atl simultaneously. The screenshot will appear in
the Journal. It is therefore possible for the teacher to put it on a USB key, to
transfer the file to a computer linked to a printer and to print.
===Memorize Activity===
===Memorize Activity===
====Activity Summary====
====Activity Summary====