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Measurement in the Rain Apr 04, 2023

California has been inundated with rain this winter.  The rain has got me thinking about rain gauges and measurement.  I have a very informal system in my backyard.  It’s just...

Using Tape Diagrams for Math Jan 11, 2023

Whenever a student is trying to make sense of a problem I like to ask, “Can you make a picture of it?”  Using a tape diagram for math can help children model lots of different...

Subtraction Strategies -Constant Difference Strategy Nov 15, 2022

Powerful mathematicians have many different strategies at their fingertips that they can use to solve problems.  They can choose which strategy will be the most efficient for...

Construct Viable Arguments in Math Nov 02, 2022

One morning a tour group passed through my second grade classroom.  The students were chattering in small groups about different math tasks they were doing.  Manipulatives were...

Frustration in Math Oct 27, 2022

“Frustration is not a sign you are not learning, but ease is.”  ---  David Epstein

This quote always stings a bit.  My mommy heart doesn’t want...

Addition Strategies- Open Number Line Oct 18, 2022

Number lines help children build mathematical meaning. Seeing the numbers arranged in order and then hoping up and down the number line helps children develop a better understanding of...

What is computational fluency? Sep 27, 2022

What does it mean to be computationally fluent?  Has this definition changed?  A generation ago, being good at math meant being fast and accurate.  I’m not sure...

Addition Strategies - Partial Sums Sep 22, 2022

In second grade students are learning to add within 1000 using strategies based on place value.  (CCSS.MATH.CONTENT.2.NBT.B.7).  So what does that mean to use a strategy based...

Many believe that some people are born with a “math brain” and some are not.  However, recent work by Jo Boaler and Carol Dweck has shown us that there is no such thing as a...

Using Arrays for Division Aug 04, 2022

Now that you have learned the importance of arrays and learned how to build them for one digit and two digit numbers, let’s take a look at how arrays can also help support...