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Proportional Reasoning Using a Double Number Line

January 7, 2020 at 09:00:00 PM · Eastern Time (US & Canada)
About This Webinar

To think proportionally or not to think proportionally is that the question? Is everything relative? How can we scaffold proportional thinking beyond ratio tables or ‘cross multiply’ by using a double number line? In this session I will share my journey with moving students from multiplicative thinking to proportional reasoning.

Recommended Grade Level: 6-12

Who can view: Everyone
Webinar Price: Free
Featured Presenters
Webinar hosting presenter GMD Host Coordinator - Leigh Nataro
Host Coordinator
I am a mother, wife and math teacher. I currently teach at Moravian College in Bethlehem, PA and my favorite class to teach is statistics! This is my 27th year of teaching and I am a Desmos fellow and Desmos certified presenter. @mathteacher24 is my twitter handle and I blog at mathteacher24.blogspot.com. I have several tech related videos for stat and TI-NSpire at www.youtube.com/mathteacher24. Feel free to ask me questions about National Board Certification (renewed in 2015). I also enjoy singing, reading and staying fit using workouts from Beachbody (P90X3/TurboFire/21DFX).
Webinar hosting presenter Christine Lenghaus
Christine Lenghaus is a secondary school maths teacher who has taught in government and private schools in both regional and metropolitan Victoria, Australia. She currently teaches in the Technical and Further Education (TAFE) sector which is government run. Previously for the GMD she has presented two webinars on Visual strategies for teaching mathematics. She has presented at the annual Mathematical Association of Victoria (MAV) conference year for ten years (2007-2017); the Queensland Association of Mathematics Teachers conference in 2016 and in April 2018 she presented at the BCME conference in the UK at Warwick University. Last year she went interstate to South Australia to present and travels across the state of Victoria sharing her passion for teaching and learning maths when not in the classroom.
Hosted By
Global Math Department webinar platform hosts Proportional Reasoning Using a Double Number Line
The Global Math Department began as a group of teachers who knew each other through Twitter, math education blogs and Twitter Math Camp. Since 2012 The Global Math Department community has grown into a multi-faceted group of math educators who love to share their ideas related to teaching and learning mathematics. We recognize that as educators we are charged with promoting equity and access within mathematics instruction. In addition, we believe it is crucial that teachers be provided with quality resources and ideas that they can use immediately with their students. Lively and friendly conversations in our weekly webinars encourage all participants to share and continue to grow as educators.
Documents
DOC
template_sphinx.docx
Preview Download Added by GMD Host Coordinator - Leigh Nataro at 10:26 PM - Monday - January 6, 2020
PDF
Double_number_lines_poster.pdf
Preview Download Added by GMD Host Coordinator - Leigh Nataro at 10:26 PM - Monday - January 6, 2020
PDF
Global_Math_Department_Proportion_Using_Double_Number_lines_Lenghaus.pdf
Preview Download Added by GMD Host Coordinator - Leigh Nataro at 10:26 PM - Monday - January 6, 2020
DOC
Experiments_with_Elastics.docx
Preview Download Added by GMD Host Coordinator - Leigh Nataro at 10:27 PM - Monday - January 6, 2020