Codruta Colceriu

Math Learning Partner, Math passionate, TDSB

[Howie Hua @howie_hua]

My response to "Why do you keep drawing so much? Just teach them the formula!"

[Codruta Colceriu @codru_c]

Today ,Gr. 2&3 students @tdsb Stanley PS confidently approached open-ended questions and showed such enthusiasm for using double number lines when solving multiplication problems. #Mmath work & engagement was simply impressive! @TDSBmath @LizBHolder @ldilworth1

[Codruta Colceriu @codru_c]

Thank you to the parents who joined us @TDSB Sheppard PS to learn about the various strategies for adding numbers & ways in which they help to build strong number sense. So nice to see parents & children working together to solve math problems! @TDSBmath @LizBHolder @ldilworth1

[Codruta Colceriu @codru_c]

Every morning, the Gr. 2/3 students @tdsb Flemington PS choose a math game to play with a partner or small group. What an engaging way to start a new day of learning & build love and motivation for math! @TDSBmath @ldilworth1 @LizBHolder #math

[Codruta Colceriu @codru_c]

Today @StanleyPStdsb, Math PLC focusing on High Impact Instructional Practices. The format: observation of 2 co-taught lessons (Gr. 2/3 & 3/4). The outcome: rich learning experience for teachers in classrooms with students deeply engaged in math! @TDSBmath @LizBHolder @ldilworth1

[Codruta Colceriu @codru_c]

Great learning happened in Gr. 2, 3 & 4 classes
@TDSB_Topcliff and @GracedalePS as students engaged in building and guessing the rules of the growing patterns created by their classmates! @TDSBmath @ldilworth1 @LizBHolder

[Codruta Colceriu @codru_c]

How can we count efficiently? Counting collections to start the Number Sense unit that will focus on representing, composing and decomposing numbers. Grade 3s @GracedalePS came up with amazing observations! @TDSBmath @LizBHolder @ldilworth1

[Tiffany @tleeteach]

Day 1 of facilitating with @codru_c on Shaping Algebraic Reasoning with grade 7-10 teachers. Such a great PD on patterning and linear relations. Great activities to bring back to the class and do with students. @TDSBmath @LizBHolder @ldilworth1

[Howie Hua @howie_hua]

How do we do this "new" way of dividing?

[Mervi Salo @mervisalo]

Over the course of this year, our Math Learning Partners (MLPs) have had the incredible opportunity to learn with Dr. Ruth Beatty through a series of sessions focused on deepening mathematical understanding.

In a recent session, Dr. Beatty guided us through powerful work on interpreting intersecting trend lines using rich story problems—an approach that invites students to explore math through context, relationships, and narrative.

Her work pushes us beyond procedural fluency toward relational understanding, where math becomes a tool for storytelling, comparison, and community connection.

This learning has strengthened our MLPs as math leaders and directly informed our system-wide professional learning on algebraic reasoning.

Grateful to Dr. Beatty for her continued partnership and generosity.

#MathEducation #RuthBeatty #RelationalMathematics #AlgebraicReasoning #ProfessionalLearning #InstructionalLeadership #TDSB #EquityInMath

[Mayor Tom Mrakas @TMrakas]

Honoured to emcee the 61st annual Aurora Art Show & Sale Opening Gala in partnership with SOYRA tonight at Town Hall. Congratulations to all the award winners—our community is truly filled with incredibly talented artists. Be sure to stop by Town Hall this weekend to see all the beautiful artwork!! #AuroraProud

[Codruta Colceriu @codru_c]

The double number line: quite "popular" among the @tdsb Gr. 3 students. An effective visual tool to help solve multiplication, division and ratio-related #math problems! @Jason_To @mervisalo @LizBHolder @TDSBmath

[Codruta Colceriu @codru_c]

Despite the winter today, teachers in North York @tdsb had an energy-filled Day 2 Building Foundational #Math Skills! We analyzed the lasting usefulness of Up & Over 10 & Constant Difference & played games to promote (+/-) strategies. @TDSBmath @LizBHolder @mervisalo @Jason_To

[Codruta Colceriu @codru_c]

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! @mervisalo @Jason_To @LizBHolder

[Codruta Colceriu @codru_c]

Every time there’s been an A-ha moment, an understanding of the #math concept as a result of work with concrete objects, I thought of Maria #Montessori’s belief from almost 100 years ago: a child’s “hand activities” and “psychological development” are so closely entwined.

[Codruta Colceriu @codru_c]

Constructive teacher conversations around multiple entry points @ Day 1 of Building Foundational #Math Skills in the Early Years. A very special Thank You to @TDSB_Gosford staff & students for hosting us in their beautiful library! @Jason_To @LizBHolder @mervisalo @ldilworth1

[Codruta Colceriu @codru_c]

Valuable learning @TDSB_Topcliff PLC: Teachers & Admin observed a Gr. 3 class & reflected on lesson parts & #math environment & compiled elements to improve their math program. Ss’ engagement while solving & creating problems: Amazing! @Jason_To @LizBHolder @ldilworth1 @mervisalo

[Codruta Colceriu @codru_c]

First thing in the morning today: Gr. 3/4s @StanleyPStdsb worked on solving problems and used Constant Difference to subtract numbers! So so proud of these kids!👏 @Jason_To @LizBHolder @ldilworth1 @mervisalo

[Codruta Colceriu @codru_c]

So impressed by the Gr. 2s @tdsb Lamberton PS! Today, they told me that the triangle is the polygon with the least number of sides, 3. And all these names come from Greek! Here they are, constructing polygons with pattern blocks. @Jason_To @LizBHolder @ldilworth1

[Codruta Colceriu @codru_c]

THANK YOU @TDSB North York teachers for engaging in today's math activities & games & the genuine conversations around the importance of building #math skills starting in the early years! A great way to slide into the Winter Holidays❄️ @Jason_To @mervisalo @LizBHolder @ldilworth1