100s kind stairs

by Kristen
(Nashville, TN)

100 kind stairs

100 kind stairs

I have a Mortensen algebra set from 1984 so we have lots of plastic 100 basic ops squares. My 5 year old was not understanding the concept of kind so we built stairs of the 100 kind. He now understands what 100 is. Before this we played with Mortensen plastic units, 10s and 100s blocks for over a year. He had felt 1, 10, 100, and 1000 pennies and counted out 100 things. I also placed ten 10 strips in a row to see how 100 can be a square or a line.

Click here to post comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Your Page.

Note: from time to time the passwords change. Simply e-mail me for a new one or a new passport as the case may be. Annual passes are good for one year, lifetime passes are good for as long as the site remains up, (site has been up for eight years now).  All single page passwords have lifetime renewal.

Note: Most Mortensen Product Ordering Buttons Have Been Removed Due To Shipping/Inventory Issues. Contact for ordering information and product availability.

Get a PASSPORT! The "SITEWIDE" Password gets you in almost everywhere BUT the parent teacher training and two other pages. What do you get for a password? ← Click to find out.

Already have one but it doesn't work anymore? Hit the Contacts tab and email me at gmail for the new one.


Sitewide Password Has Changed as of 14FEB2017.
Training Password Has Changed as of 14FEB2017.
EZPZ & Trig to 8 year olds passwords have changed as of 14FEB2017.

NO MORE LIFETIME PASSES. NO MORE SUBSCRIPTIONS.


One Time Pay
People are shockedand amazed when they see how much they get for a password.
Annual Options.


Most bang for your buck is a Sitewide or AP2 Sitewide plus Teacher Training.
Remember these are only good for 1 year.