3 Act Tasks

Problem solving lessons that
spark a conversation

Clothesline Math

Interactive number
lines for K-6

Clothesline Math Club

See more ideas about
clothesline activities

Number Talk Images

Finding math in every
day places

Now Available For Purchase - Hanging Math Out To Dry With Elementary Clothesline Math

By Kristen Acosta

Making sense of math one card at a time

If you would like to purchase books using a purchase order, please email Kristen at thekristenacosta@gmail.com.

Upcoming Conference

Hazelwood School District, Florissant, MO ( January 2 - January 2 )

Latest Blog Posts

How I got started….

Years ago, a colleague of mine suggested that I present at a local math conference. She had been witnessing some of the work that I had been doing in classrooms. Apparently the math ideas, lessons, and strategies were worth sharing. And so, I applied, spent months preparing for the presentation, and went off to my local math conference. I was ...

Why Do I Present?

Fawn Nguyen once wrote a blog post called “Be Brave or Be Desperate.” You can read it here. To summarize, she was asked the question “why do you present?” She considers herself a storyteller of her students’ successes and failures. Fawn stresses how important it is to get the story correct. Her friend in turn replies that Fawn is brave. ...

What is your biggest “ick” with PD?

This question has been recently rattling around in my head. And I’m dreading what my district will come up with when we get our student-free day in January. A few days ago…I saw this question…”What’s your biggest *ICK* when it comes to PD?” Take a look…. One of my favorite PD horrors was last year. Grades 3-6 ...