Author Archives: Christina Tondevold

Webinar: The Power of the Benchmarks of 5 & 10

January 14, 2017 5 comments

Yup, it's me this month!! :) . This month I really wanted to re-iterate the power of helping kids develop an understanding of Benchmark Numbers (or Friendly Numbers). I think it's important to move away from the "Make 10" strategy and call it "Make it Friendly" (or your own version of that)....because "Make 10" only [...]

Representations: Modeling on the C-R-A Continuum

January 14, 2017 4 comments

If you've seen my stuff on the C-R-A (Concrete-Representational-Abstract), then you know I'm a fan of doing all 3 at once with kiddos. In this video I talk about how the kiddos' modeling really falls on a continuum. Their models that seem abstract may actually be very concrete and their models that seem concrete may [...]

Standards: Math Practice #4: Modeling with Mathematics

January 14, 2017 4 comments

This video is an overview of Standards of Mathematical Practice #4: Modeling with Mathematics. If you are not familiar with the SMPs, they are pages 6-8 of the Common Core Standards. The SMPs tell us what the STUDENTS should be doing while trying to learn all the grade level standards. They are a wonderful addition to [...]

Tasks: 3 Act Math Tasks

December 6, 2016 11 comments

3-Act Tasks are an amazing way to get kids interested in investigating mathematics and how it helps them solve problems in their own world. These tasks are 'low floor', all kids have an entry point, which allows all kids to be actively involved in the tasks. In this video, I give a brief overview of [...]

Standards: Subitizing

December 4, 2016 0 comments

This video explains how subitizing is tied to these standards: K.CC.4, K.CC.5, K.CC.6, K.OA.4, 1.OA.3, 2.OA.3, 2.OA.4, K.NBT.1, 1.NBT.5, 1.NBT.6

Representations: Various Subitizing Visuals

November 23, 2016 0 comments

In this video, I talk about the various representations you can be using when doing Subitizing activities. Personally, I started using various representations when my kids first started counting/subitizing.

Webinar: Subitizing Games

November 16, 2016 2 comments

Dr. Beth MacDonald exceed my expectations on this webinar. I've been a proponent of subitizing since I first learned of it, but Dr. MacDonald shared such detailed insight about subitizing that I was blown away (and taking notes) the whole time. Get all the resources HERE, that includes the games she talks about, the assessment [...]

Tasks: Line ‘Em Up Game

November 16, 2016 11 comments

This game is an excellent way to be watching for those Early Numeracy Look Fors. In this video there are times when my 3 year old is Subitizing. There are times when he shows Verbal Counting, Object Counting, and Cardinality...but there are also times he shows that he does NOT have those.

Conferring with Young Mathematicians with Cathy Fosnot

October 22, 2016 1 comment

Cathy Fosnot is Professor Emerita of Childhood Education, CCNY and the City University of New York, where she was the founding director of Mathematics in the City, an internationally-recognized center for math professional development, K-8. She has authored, edited, and/or co-authored numerous books on mathematics education, among them, Models of Intervention in Mathematics Education: Reweaving [...]

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