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Deployment Team/Resources/GuideXOGabon (view source)
Revision as of 16:58, 6 May 2009
, 16:58, 6 May 2009no edit summary
===Calculate Activity===
====Activity Summary====
The activity calculation is a calculator. The student can calculate using numbers and
signs. In calculating it recognizes numbers, puts them in a distinctive way before and / or
According to the mathematical signs to perform different types as
add, subtract, multiply and divide.
====Affordances of the activity====
* The student can add, subtract, multiply or divide numbers or
numbers.
* Students can make all kinds of divisions (between numbers of
fractions).
* The student can add fractions with the same denominator.
* Students can multiply decimal numbers by 10, 100, 1000.
* Students can calculate the percentages.
* Students can calculate problems in situations involving addition,
subtraction, multiplication or division.
* Students can share their findings with a classmate of the class through the XO.
* The teacher will save time and be able to quickly appease conflict cognitive that may generate some results.
====Degree of centrality of the activity====
Calculate activity is very central to all mathematical tasks
students from the class of the preparatory first year of primary school. Arrived in fourth
grade, students will be able to ask operations to add,
subtract, multiply and divide, to perform various calculations, or to solve
problem situations in mathematics.
From the fourth year, the event will calculate the teacher to see if students
know how to use mathematical tools and their correct answers.
====Application pédagogique 1====
''Level (s)'': 4th grade of primary
''Knowledge'': Addition of numbers from 0 to 10000
''Savoirfaire'':
Calculate in situations problems, are numbers from 0 to
9999.
''History'':
Suggested Activities: Reading and analysis of statements of problems involving
additions. (eg Add the following numbers: 11 and 43, 13 and 67, 45 and 87).
After clicking the icon appearing Calculate the prospect of Home XO,
the student recognizes the numbers and select using the mouse or keyboard. It raises
its operation on the computer screen and tap the enter key to get display
result.
Collaboration dyad:
After making its calculation, the dyad share his results with another dyad by
Discuss the activity. Example:
Dyad 1, we find 11 + 43 = 54 and you?
Dyad 2: we find 43 + 11 = 54.
Dyad 1: It's funny we have the same result, but we have not put the operation
in the same order.
Dyad 1: Yes, it's just because in addition, order numbers and figures is
not significant, the result is always the same because the addition is commutative.
Through this exercise, the teacher can help students understand the concept of
commutativity of addition for example.
====Application pédagogique 2====
''Level (s)'': 4th grade of primary
''Knowledge'': The soustration numbers from 0 to 10000; The multiplication by 2, 3, 4 and 9 ....
numbers from 0 to 10000.
''Savoirfaire'':
Calculate in problem situations, differences and products
numbers ranging from 0 to 9999.
''History'':
Invention and analysis by students in problem situations involving
subtract and multiply by 2.3 ... 9 numbers from 0 to 10000 Example: Mom gives
Makaya to 100 francs for pocket money this week, he bought candy for
75 francs. How it is there? Eg a box of eggs contains 6 eggs. How many has he
7 eggs in cartons of 8 boxes each.
Students organized dyad perform subtraction through the calculator
XO by putting the correct numbers and numbers with the mathematical sign. Then, in
tapping the Enter key, they will get the result of their operation.
Collaboration dyad:
Dyad 1: To solve the problem, we pose the following subtraction: 100 - 75 =
25. And you?
Dyad 2: To solve the problem, we found the operation: 75 - 100 = -25; We
do not understand why the calculator we place the sign (-) before the number 7, then
that we are in the subtraction of integers.
Dyad 1: Because you put your evil operation. In the subtraction
natural, most are still before the minus sign (-), since the subtraction
is not commutative.
Dyad collaboration allows students to share their results. Replies
generate different cognitive and sociocognitive conflict, allowing the discussion with
Close to formulate the issues of personalized learning to better
ownership of knowledge. The use of the calculator through the XO, can check its
own results.
====Guide to use the Calculate====
To access, place the cursor Calculate the icon (represented by the pictogram of a
calculator).
<image Home view>
Click Start to use the calculator. To perform operations that are
in connection with the problem, use the buttons on the calculator on the screen or
those keys to make the mathematical operation.
<image Calculator>
The Enter key gives the answer once the transaction is asked. Equations and their
history will appear in the white square on the left hand side of the screen.
===Activity Ruler===
===Activity Ruler===
====Activity Summary====
====Activity Summary====