It is no secret that Quarter the Cross is one of my favourite tasks. I've written about it twice before: as a Day 1 activity and in connection with Fraction Talks. The original source is apparently T. Dekker & N. Querelle, 2002, Great Assessment Problems (www.fi.uu.nl/catch). It has proliferated in recent years, including with an active Twitter hashtag: #QuarterTheCross. … Continue reading #QuarterTheCross Card Sort
Category: math1070
If maths was an animal …
'If maths was an animal it would be a _______ because _______ ' Responses from my #math1070 students: A koala because maths is interesting and unique. A spider because of the pattern organisation of their web. A cat because it has lots of layers. An ant because lots of small parts make up a big part. … Continue reading If maths was an animal …
A lesson plan (of sorts) for quadrilaterals
This tweet sums up today's class. We've had a two week break, culminating with a public holiday Monday. In our first class back, I wanted to add some supporting activities for the difficulties we were having in our last class. Let's just say that I'm not sure that what we did today helped! Luckily, I … Continue reading A lesson plan (of sorts) for quadrilaterals
A serendipitous Pythagorean #LessonStarter
#LessonStarter is a Twitter hashtag, used particularly by Matt Skoss, to collect together ideas that might start (or take over!) a lesson. A #LessonStarter is usually a provocative image, but could also be an intriguing mathematical prompt. For me, lesson starters are often spontaneous. Today, a few serendipitous moments meant that I had a lesson … Continue reading A serendipitous Pythagorean #LessonStarter
Skyscrapers
This is a quick post mainly for the benefit of my 'Developing Mathematical Thinking' (#math1070) students. Introducing the puzzle Skyscrapers are one of my favourite logic puzzles. They are a Japanese creation, introduced at the first World Puzzle Championship1 in 1992. Skyscrapers are a type of Latin Square puzzle. A Latin Square in an n × n … Continue reading Skyscrapers
Redux: #NoticeWonder and #PrimeClimb
Last year I wrote a post about using the two simple questions 'What do you notice?' and 'What do you wonder?' with my maths pre-service teachers to dig into the mathematically-rich image that accompanies Dan Finkel's game, Prime Climb. This year, I wanted to turn this into a student-driven rather than teacher-led activity. I also … Continue reading Redux: #NoticeWonder and #PrimeClimb
Tangling and untangling
This is the seventh in a series of posts about my course ‘Developing Mathematical Thinking’, a maths content elective for pre-service teachers training in primary and middle maths. All posts in the series are here. WARNING: It's a long post. Edited to fix the confusion between × (multiply) and x (the letter). I have been itching to try Conway's Rational Tangles … Continue reading Tangling and untangling
