Mental Math and Science Skills

Math:

Today we warmed up with our 9 times tables in order to learn tricks and observe patterns to make multiplying by 9 easier. Students were very observant and noticed many patterns including:

• in the answers the digits in the tens place increase by one and and the digits in the ones decrease by one (09, 18, 27, 36, 45, 54, 63, 72, 81)
• the digits of each answer add to nine (e.g. 9 x 2 = 18, 1 + 8 = 9)
• 9 doubled is 18, 18 doubled in 36, 36 doubled in 72 (all answers of 9 x tables)
• the answers have numbers that are in opposite order (e.g. 18 and 81, 27 and 72

We played Finko with our quick multiplication facts up to 12 x 12. Students were able to notice which times tables they needed to work on and the importance of learning some of these quick facts, while having a bit of fun!

Homework:

Practice one of your times tables that you find challenging using the computer or a stack of cards. 

*** Students are welcome to borrow multiplication flash cards from me

Science:

We reviewed 4 terms from yesterday's lesson (observations, inferences, quantitative, qualitative) and students finished their vocabulary sheets. We then practiced making observations and inferences using three powerpoint slides with footprints in a story board. Students had to make three factual observations and one inference for each slide. We finished the lesson with an activity where students made observations and inferences from pictures. 

Assignment:

These two observation and inference worksheets were collected at the end of class and will be marked. Sstudents will have extra time to work on them Friday if needed.