Parents if you are wondering about what or why things are taught in school, the government of Alberta has put out A Child's Learning: A Parent Resource to help you understand what we are trying to accomplish. This link above takes you to a general page. You are welcome to explore other grades but here is the link to grade 2. It's a pdf file so it might be difficult to view on your phone.
Here is a visual I use to help me in my planning and thinking about curriculum.
I've linked it to the Alberta Education website if you wanted more information. I hope this helps to clarify or maybe give you more insight into what you're child should be learning in school.