World Record books are a big hit in our classroom. We love reading them and looking at all the amazing things that people have accomplished. We have also found that they're great for math! This week, we have been working on a collaborative Google Slides document, using world records to create math questions, with a focus on addition and subtraction of 4-digit numbers. It's a fun way to practice adding and subtracting, and to find out some interesting facts at the same time. For your challenge this week, see if you can find the answer to all the questions on our World Record math presentation.

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One of our math expectations from an earlier unit was to solve real-life problems involving the magnitude of numbers up to 10 000. This week's math challenge is an open problem (problem with many possible solutions or ways to solve) related to this expectation.

The number of people at one hockey game was 1438 more than the number at another hockey game. How many people might have been at each game? Do you think they were NHL games?

]]>The number of people at one hockey game was 1438 more than the number at another hockey game. How many people might have been at each game? Do you think they were NHL games?

At school we are completing our unit on data management and beginning to work on patterning and algebra. We have been expressing our pattern rules in t-charts and words and have created growing and repeating patterns using math manipulatives. Next week we will begin looking at number patterns. This week's challenge introduces number patterns to students.

A pronghorn antelope can run at a speed of 28 metres/second. A kangaroo travels at 14 metres/second. Suppose that an antelope and a kangaroo had a race, and the kangaroo had a head start of 100m. Will the antelope pass the kangaroo? If so, how many seconds would it take the antelope to pass the kangaroo?

]]>A pronghorn antelope can run at a speed of 28 metres/second. A kangaroo travels at 14 metres/second. Suppose that an antelope and a kangaroo had a race, and the kangaroo had a head start of 100m. Will the antelope pass the kangaroo? If so, how many seconds would it take the antelope to pass the kangaroo?

Currently, we are working on Data Management in math. Your challenge this week is to find an example of how data is used in real life. You may look in newspapers, magazines or on the Internet to find examples of graphs or charts. When you find examples, write 5 statements about what you can learn from the graph or chart. Return these challenges to school by November 12.

]]>One of the activities we completed in math last week was to find a way to make all the numbers from 1 to 20 by adding, subtracting, multiplying or dividing four different single digit numbers. For example,

7 + 8 - 5 - 9 = 1

5 x 2 - 7 - 1 = 2 ...

This week's challenge involves creating consecutive numbers. For example, the number 12 can be expressed as the sum of consecutive numbers: 3 + 4 + 5 = 12. Another consecutive number is 3: 1 + 2 = 3.

Try to express as many numbers as you can as the sum of consecutive numbers. Can all numbers be seen as the sum of consecutive numbers? Can some consecutive number sums be written in more than one way? Bring in as many consecutive number sums as you can by Friday, September 25.]]>