Understand the strategies
Go over the main calculation strategies the children work on during Primary School independently, concisely, and in a non-complex way, in order to help them internalize, strengthen and apply them.
1st - 2nd grade primary school
1-Let's Add by Jumping
The jumping strategy is a key one for mental calculation.
2-Let's Subtract by Jumping
The jumping strategy is a key one for mental calculation.
3-Let's Add by Breaking Down
The breaking down strategy is a key one for written calculation.
4-Let's Subtract by Breaking Down
The breaking down strategy is a key one for written calculation.
5-Let's Derive Facts
Deducing facts based on others we are already aware of, is a crucial strategy for making the most of all the basic facts we already know.
6-Let's Estimate
On a daily basis, we do not have to make exact calculations very often, so we make approximate ones, and these involve different strategies that need to be worked on.
3rd - 4th grade primary school
7-Let’s Add and Subtract by Jumping
The jumping strategy is a key one for mental calculation.
8-Let's add by breaking down
The breaking down strategy is a key one for written calculation.
9-Let's Subtract y Breaking Down
The breaking down strategy is a key one for written calculation.
10-Let’s Build and Practice the Multiplication Tables
Let’s see how we build the multiplication tables and how we can practise them in order to automise them.
11-Let's Multiply Using the Rectangular Model
The rectangular model gives meaning to multiplications beyond the times tables.
12-Let's Divide
One way of understanding divisions is as the sharing of equal parts.
13-Let’s Derive Facts
Deducing facts based on others we are already aware of, is a crucial strategy for making the most of all the basic facts we already know.
14-Let's estimate
On a daily basis, we do not have to make exact calculations very often, so we make approximate ones, and these involve different strategies that need to be worked on.
5th - 6th grade primary school
15-Let’s Add and Subtract by Jumping
The jumping strategy is a key one for mental calculation.
16-Let's Add and Substract by Breaking Down
The breaking down strategy is a key one for written calculation.
17-Let's Do Percentages
Percentages are expressions used widely in our daily lives.
18-Let's Derive Facts
Deducing facts based on others we are already aware of, is a crucial strategy for making the most of all the basic facts we already know.
19-Let's Estimate
On a daily basis, we do not have to make exact calculations very often, so we make approximate ones, and these involve different strategies that need to be worked on.
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Created in collaboration with PhDs in math education
and supported by leading scientific institutions.
