
Liz Holder
@lizbholder
Superintendent of Education, TDSB
ID: 965029917539778560
http://www.tdsb.on.ca 18-02-2018 01:07:16
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1,1K Followers
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Using mini whiteboards is a great way to carry out quick formative assessments as seen here with our math partner teacher Downsview Secondary & allows for students to think-pair-share. Jason To is chillinā on BlueSky (@mrjasonto.com) Liz Holder Lisa Dilworth Mervi Salo


Great to see our grade 1 class Fleming P.S. using the Meet Edison robots. Lots of excitement and problem solving. Toronto District School Board TDSB STEM K-12

So much fun learning from student leaders in Mr. Karlovās 5/6 class about how to play the Africentric math game Oware Willow Park Junior Public School. Ss will be teaching neighbouring schools how to play and host a tournament in May! Jason To is chillinā on BlueSky (@mrjasonto.com) Mervi Salo Liz Holder TDSB Mathematics & Numeracy


Constructive teacher conversations around multiple entry points @ Day 1 of Building Foundational #Math Skills in the Early Years. A very special Thank You to Gosford PS staff & students for hosting us in their beautiful library! Jason To is chillinā on BlueSky (@mrjasonto.com) Liz Holder Mervi Salo Lisa Dilworth


Day 1 of Shaping Algebraic Reasoning allowed teachers to engage and play in the math. We built patterns with tiles and saw how this can help our students see the multiplier&constant, determine equations and make predictions. Jason To is chillinā on BlueSky (@mrjasonto.com) Mervi Salo Liz Holder Lisa Dilworth


Wexford Collegiate School for the Arts Team 9782 competed on March 7th & 8th FIRST Robotics Canada Centennial College! We are proud of the dedication of our students, staff advisors and support from our parents/caregivers/guardians. Neethan Shan Sara Gogani Nandanee Sawh Sim Rena DeCesare



When the correct answer isnāt 22, but I wouldnāt have known that if I didnāt use the mini whiteboards a a tool for assessment. This helped my partner teacher & I know that this was a question we needed to take up with the class. Jason To is chillinā on BlueSky (@mrjasonto.com) Liz Holder Lisa Dilworth Mervi Salo


Thin sliced activity on unit rates and proportion happening Westview Centennial SS . Being able to see students collaborating and engaged & hearing the math conversations is so great 𤩠Jason To is chillinā on BlueSky (@mrjasonto.com) Liz Holder Lisa Dilworth Mervi Salo Brandon Zoras


Gr. 4/5s @TDSB Flemington PS practised equipartitioning a length w/ the Unit #Fractions Paper Strips task. This hands-on activity was engaging and super fun for all students & a great assessment opportunity for the teacher! Mervi Salo Jason To is chillinā on BlueSky (@mrjasonto.com) Liz Holder


So proud of Wexford Collegiate School for the Arts WexTech Titans 9782 for qualifying for FIRST Robotics Canada provincial! Neethan Shan Sara Gogani Nandanee Sawh Rena DeCesare Sim Daniel Rocchi Annika Pint š¤š©š»āš«šæš§š»āāļøš©š»āš¬š


The double number line: quite "popular" among the Toronto District School Board Gr. 3 students. An effective visual tool to help solve multiplication, division and ratio-related #math problems! Jason To is chillinā on BlueSky (@mrjasonto.com) Mervi Salo Liz Holder TDSB Mathematics & Numeracy



Kids are lovin' ā¤ļø the micro:bits and electrical circuit kits! šā”ļø Next up: programming to test for insulators and conductors. Hooray! šŗšš½ Valley Park Middle School

Awesome gr9 Ss solves 2x+3=x+1 w/ algebra tiles. Day before we used tiles to add&subtract polynomials. Then a bit of direct instruction for solving equations & off they went! I didnāt even do an example for multi step&they figured it out themselves. Liz Holder Lisa Dilworth

The importance of collecting ongoing data w/ formative assessments. We were keeping our eye out on these students,taught them algebra with algebra tiles &were able to move them forward. Still have more work to do but happy to see these students succeed.𤩠Lisa Dilworth Liz Holder


Had a great time w/secondary math teachers at Northview Heights talking algebra tiles, formative assessments, small group instruction, tracking student data, polypad&desmos. Grateful for the support from admin & dept in continuing professional development.Lisa Dilworth Liz Holder


Implementing our āShaping Algebraic Reasoningā PD with our Math Learning Partner schools & teachers. As we enter our linear relations unit, gr 9 students are building patternsā”ļøequationsā”ļøgraphs. Liz Holder Lisa Dilworth


Loved seeing the ten sticks being used today at Thorncliffe Park TDSB with gr1/2 student during student math interviews. Such an easy way to practice splitting by grouping tens together! No more finger counting! TDSB Mathematics & Numeracy Lisa Dilworth Liz Holder NadiraPersaud-FOS14/LC2


Analyzing students' answers on EQAO sample questions from a google form to determine any common misconceptions & to help create small group instruction to work on specific topics with certain students or with the whole class. Liz Holder Lisa Dilworth
