![Stop saying "Just add zeros"!](https://static.wixstatic.com/media/1dc083_3f8105faa45b421392d03c17ffa515b0~mv2.png/v1/fill/w_411,h_240,fp_0.50_0.50,q_95,enc_auto/1dc083_3f8105faa45b421392d03c17ffa515b0~mv2.png)
Stop saying "Just add zeros"!
I wish primary school teachers would stop teaching students that you just add zeros when multiplying by multiples of 10. It often leads...
![](https://static.wixstatic.com/media/1dc083_bad5c473fb404132a418063f16be34a7~mv2.jpg/v1/fill/w_250,h_250,fp_0.50_0.50,q_30,blur_30,enc_auto/1dc083_bad5c473fb404132a418063f16be34a7~mv2.jpg)
![Using only one hand?](https://static.wixstatic.com/media/1dc083_bad5c473fb404132a418063f16be34a7~mv2.jpg/v1/fill/w_524,h_393,fp_0.50_0.50,q_90,enc_auto/1dc083_bad5c473fb404132a418063f16be34a7~mv2.jpg)
Using only one hand?
I have noticed this year that very curiously many young students are doing maths with one hand on the side of their seat while the other...
![](https://static.wixstatic.com/media/1dc083_b9445d785c4d47289797c6f7904673fd~mv2.jpg/v1/fill/w_250,h_250,fp_0.50_0.50,q_30,blur_30,enc_auto/1dc083_b9445d785c4d47289797c6f7904673fd~mv2.jpg)
![Not wrong, and yet not the best use of language for conceptual understanding](https://static.wixstatic.com/media/1dc083_b9445d785c4d47289797c6f7904673fd~mv2.jpg/v1/fill/w_524,h_524,fp_0.50_0.50,q_90,enc_auto/1dc083_b9445d785c4d47289797c6f7904673fd~mv2.jpg)
Not wrong, and yet not the best use of language for conceptual understanding
Area and Perimeter It is curious that so many students when asked about perimeter and area say that “perimeter is the outside” and “area...