Subtracting on the Open Number-Line and Inukshuks!


Reminder: Tomorrow is Valentines Day. Student's are welcome to pass out valentines (no candy or food please) and we will be writing friendship notes. 

****I am still in need of 1-2 Volunteers for this upcoming Wednesday morning from 9-11am. We are so lucky to have Teacher's Pet coming in to help us carve soapstone polar bears. Please email me if you are able to come and have volunteer clearance for the CBE: snmcdonald@cbe.ab.ca


Science/Social
 We had a great discussion around what research is, why we do it, and what types of skills you need to be a researcher. We are researching the polar bear as a class, including social discussions and current events that may be in the news. We are also each individually researching an animal that is a character from our myth. Some of those animals include; the narwhal, arctic fox, wolf, lemming, harp seal, arctic rabbit etc.! Ask your child which one they are doing!


We did a practice research session together from an article about Polar Bears. We used highlighters to pick out the important information that we needed to answer our research questions.  



Math
In math we continued using an open number line for subtraction strategies to solve the different ages Carlos's family members would have been when Carlos was born. Ask me how I know if a question is a subtraction question. 


In this strategy a student was solving for the equation 35-8. They decided to break the 8 into a 5 and a 3 for efficiency of counting. They first 'jumped' backwards by 5 and landed at 30. They then jumped backwards 3 times by one for the remaining 3 and landed at 27!



In this strategy a student was solving for the equation 33-8. Again, they decided to break the 8 into a 5 and a 3 to make counting backwards more manageable. This time though, the student went back 3 one's FIRST and landed on 30, and THEN jumped backwards for the 5 and landed on 25!

It is very important for students to be practicing counting backwards from multiples of 5. Thank you!
for eg: 50, 45, 40, 35, 30, 25, 20, 15, 10, 5

We also learned a new strategy for subtraction!

54-8 can be solved by making the 8 into 10 and changing the equation into 54-10 as subtracting 10 is easier once we know how to count backwards by tens. 

so then we change it to 54-10=44 
****We must remember to add the 2 back we borrowed to our answer because we actually only want to subtract 8! 

So...  44+2=46. 

PRACTICE ONE AT HOME 

63-8=??


Arctic Inquiry
We also read the book Hide and Sneak by Micheal Kusugak and watched a video about the importance of Inuksuk's to the Inuit people. We practiced building some with our own rocks! Ask me what I built with my group and what kind of an Inuksuk it was? What would it's purpose have been in the Arctic? 

here is a video to watch for more information:

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