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

NorthWest Mathematics Conference, Portland, OR ( October 13 - October 14 )

Latest Blog Posts

A Clothesline Math Mistake

It’s the beginning of a new school year and something magnificent happened during one of my beginning of the year activities. I usually play “Guess My Number” with my class, but decided to do a number talk with the class. I have done this number talk plenty of times during presentations! Or at least you would have think I’ve ...

Success or Legacy?

As the first days of school are soon started…my mind has been pondering a thing. What makes a teacher successful? How do we measure our success? Let me back up a bit. At my district, seniors at the high schools are allowed to invite a special guest to their graduation. The special guests lead the graduates onto the football ...

Testing is over….now what?

It’s that time of the year when the ugly monster called “CAASPP” comes lurking about. (That’s the test we take here in California). Teachers are fretting that they may not have covered as many standards as they had wanted. Meanwhile, it’s spring time for students. They are antsy, edgy, and see that summer is around the corner……….or maybe I’m describing ...