## Understanding Surface Area

Measuring surface area continues to be a challenge for many students in the junior grades.  Recently someone was asking me about this, so here are a few thoughts. EQAO Problem:  The container of popcorn shown is in the shape of a rectangular prism.  What is the smallest amount of paper … More Understanding Surface Area »

## Perimeter and Multiplicative Thinking

Another exciting day of job-embedded learning with students and educators in a primary class.  The teacher had just introduced her students to perimeter the day before. – “estimate, measure, and record the distance around objects, using non-standard units”.  The students were organized into pairs and given a shape and snap … More Perimeter and Multiplicative Thinking »

## Birthday Party Best Deal

Here is a different “best deal”  problem!  In my daughter’s Grade 5 classroom we adapted a Patterning & Algebra problem that was shared on Twitter thanks to Michael Sloan. For your birthday, you have decided to take your friends to play Laser Tag.  You have two choices. Super Laser offers … More Birthday Party Best Deal »

## Teaching to Big Ideas – Proportional Reasoning

Reflection Questions How might using Big Ideas impact how I plan? How might we as educators help students see things from a proportional reasoning perspective? Do you have a full range of manipulatives appropriate to grade level curriculum in your classroom? Do your students have access to these manipulatives for … More Teaching to Big Ideas – Proportional Reasoning »

## Easter Math

I was not  planning on writing a post on Easter Sunday, but some real-life math occurred while preparing for dinner.   I am sharing here what I posted on my Math Motivator Facebook page. My ham is 5.49 kilograms.  The instructions say to cook it 12-15 minutes per pound or … More Easter Math »

## Ants! Ants! Ants!

Recently in a Gr 3, 4, 5 classroom we gave the students this question: Students are learning about insects. They discover that an ant has 1 body, 2 antennae and 6 legs. They each make a model. How many bodies, antennae and legs will they need for 5, 10 and … More Ants! Ants! Ants! »

## Assessment for Learning – Fractions

Recently I was invited to be a member of the EOSDN Panel Presentation at CAfLN (Canadian Assessment for Learning Network Conference & Symposium) held at Queen’s University.  CAfLN is a member-led, non-profit organization connecting people across Canada who are interested in the use of assessment for learning and the … More Assessment for Learning – Fractions »

## Proportional Reasoning – Division

Recently I had the opportunity to work in a Grade 6 classroom as they began a unit on division and multiplication. The teacher gave the students the following problem from the Ministry support guide (division) to begin. The purpose for that day was to see what the … More Proportional Reasoning – Division »

## Proportional Reasoning – Measurement

I love problems that provide authentic opportunities to cluster several big ideas.  Recently, I was in a classroom where the teacher gave the following problem to his students. Tia is filling a bucket with water.  She knows that 500 ml of water comes out of the hose every 10 seconds. … More Proportional Reasoning – Measurement »