Recently we've been working with dot collections from Gerri Lorway to look for smaller groups of dots within a set of them. The students have loved using these different images to estimate the amount of dots after just seeing them for a flash, and then analyzing the sets of dots to decompose them into different groups. This helps us to use the commutative property and associative property (see above), and as Gerri Lorway says, "The ability to flexibly name numbers is foundational to building long term recall of facts."
The students to 2B have been demonstrating growing skills with two-digit addition and subtraction, so today they were given a mission to make a pretend selection of toys for themselves using online children's stores with a budget of $100. All the students stayed within the budget (with a few approvals to go over budget if their three-digit math was accurate), but their selections and adding strategies were varied and impressive. We look forward to planing more shopping trips with our math skills!
We've been practicing our estimating skills in 2B this week, and the students have become more comfortable with having an informed estimate that doesn't exactly match their subsequent count. In grade two, students use referents to help inform their estimates, and the class is getting impressively accurate with their estimates of amounts up to 100!
We're almost done our focus on measurement in Math, and the students have really enjoyed measuring mass using a variety of units. They've become pros at estimating, measuring, and comparing different masses, and selecting the appropriate unit to use when measuring mass. Check out some of the games we've been playing during this unit below!
We’ve been learning all about measuring length this week in our math classes and the highlight of our measuring was comparing the lengths of our limbs, torsos, and heads. We found that if we used different units (such as small snap cubes vs. popsicle sticks) our measurements were different (but still indicated the same length). You can watch the video below and play the games that are linked to learn more about measuring length
In Math, we are beginning a new focus on addition and subtraction up to 18, and solving word problems. This unit will focus on deepening your child’s understanding of number relationships, counting, and place value. Below you can find a game and video we've been playing to get this unit off to a fun start!
The learning goals for this unit are to:
You can also play the video and games below for extra practice at home!
We've been working on estimating in Math this week, including talking about how our estimates need to be informed and logical but not perfect, using referents (a smaller group of objects) to make an accurate estimate, and comparing our estimates to our counts. We also used skip counting strategies to more accurately and efficiently large groups of items. There are some great number sense and estimating gurus in our class!
We've been busy with numbers up to 100 recently in Math, whether we were skip counting with money (a big highlight), investigating even and odd numbers, counting toothpicks like Raymond from Rain Man, and using ordinal numbers to describe objects (such as first, second, 3rd, 4th). The students were expert money counters, and felt quite prepared to spend their pretend money! If you'd like more practice at home with numbers to 100, the linked games below are focused on some of our learner outcomes for this unit.
Mrs. Barker is a grade two teacher at Millgrove School. She loves science and reading, and lives in a little brick house with Mr. Barker and her kids Jack and Ellie.