Array Pink Tower - Brown Stairs Extensions | Montessori From The Heart
Adrian 2 years Adrian 3 years SENSORIAL ๐Ÿ–๏ธ๐Ÿ‘€๐Ÿ‘‚๐Ÿ‘…๐Ÿ‘ƒ

Pink Tower – Brown Stairs Extensions

Once the child has mastered the Pink Tower (read a post here) and Brown Stairs (read a post here) separately, you would start introducing extensions of these activities, by combining the two. (Buy the Pink Tower here and Brown Stairs here.)

Adrian at 27 months working on Pink Tower & Brown Stairs Extension:

Building Pink Tower & Brown Stairs vertically.

Adrian at 30 months:

DSC_0105-001A material incorporating "control of error" allows a child to check his own work and self-correct if needed.

DSC_0109-002Adrian runs his index finger across Pink Tower's cube and a Brown Stair to see if they are the same height.


DSC_0125-001Building Pink Tower & Brown Stairs horizontally.
DSC_0125-001The Pink Tower & Brown Stairs when laid correctly would align in height.

DSC_0158-001Building Pink Tower & Brown Stairs horizontally on an angle.

 Adrian at 33 months, working with Julia, 6 and-a-half:

Here, Julia is improvising, making her own design.

 Adrian at 34 months:



Adrian at 36 months:

DSC_0326.JPGNot that long ago, Adrian attempted this particular combination, and he could not do it.
At 36 months, he is confident and precise. 

DSC_0031-2Adrian at 42 months assembled this extension to honor the ๐ŸŒ Earth Day.

DSC_0051Children's engineering skills have led to this extension!

I โค๏ธ๏ธlove how certain traditional Montessori Sensorial materials have math intertwined in them, exposing children to early algebra and geometry. It is such a joy seeing my ๐Ÿ‘ฆ๐Ÿผ๐Ÿ‘ง๐Ÿปchildren work together on Pink Tower & Brown Stair extensions, while also developing their engineering skills.

Pink Tower consists of 10 pink wooden cubes with width graduated in increments from 1 cm (which is 3/8" on each side) to 10 cm or 1 cubic centimeter to 1 cubic decimeter. Any 2 successive cubes vary in 3 dimensions: length, width and height, thus making their difference in size reasonably obvious to a child. Pink Tower is a material for teaching size, where cubes increase progressively in the algebraic series of the third power according to the numerical series.

Brown Stair however is for teaching thickness. While the length of the stairs (prisms) remains constant, the square section of the broad stair varies: sides of the square sections vary according to the series of natural numbers, i.e., in the 1st stair, the square of the section has sides of 1 cm, in the 2nd of 2 cm, in the 3rd of 3 cm, etc.. The stairs therefore are in the same proportion to one another as the numbers of the series of squares (1, 4, 9, etc.), for it would take 4 stairs of the 1st size to make the 2nd, 9 to make the 3rd, etc. The pieces which make up the series for teaching thickness are therefore in the following proportion: 1 : 4 : 9 : 16 : 25 : 36 : 49 : 64 : 81 : 100..

Wow ๐Ÿ˜ณ that is a lot for playing with cubes and prisms!

What extensions do you do with your child?

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  • Reply Stephanie Gunn May 23, 2017 at 12:23 am

    Hello where did you purchase the pink tower and road stair? Thank you.

  • Reply Anya May 23, 2017 at 2:36 pm

    Thank you for your interest. I have the links to both product at the end of 1st paragraph (see above), though you might find different pricing as the quality does range. Or, check my Amazon Store link here

  • Reply Sarah June 28, 2017 at 6:45 am

    Where did you get the extension cards from?

  • Reply Anya June 28, 2017 at 10:50 am

    Please, subscribe to my blog, and I will receive a notification of your subscription with your email. I will then email them to you. Which exact extension would you like? There are few levels of difficulty. Thanks, Anya

  • Reply simon stenberg August 21, 2017 at 11:54 am

    Hi, your extension cards are great, can you tell me where you got them as I am looking for a set for my classroom. Thanks, Simon

  • Reply ayisha August 27, 2017 at 2:11 am

    i’d also like to ask for the extension cards. thank you so much

  • Reply Anya August 27, 2017 at 11:24 am

    I emailed them to you, Anya

  • Reply Paula October 20, 2017 at 2:53 pm

    Hi, these extension cards are fab. Would I be able to have a copy?

  • Reply Claudia October 31, 2017 at 1:49 am

    Hi, I’ve just subscribed to your blog, as it is an very inspiring. I would like also to receive the extensions for Pink tower, and for the Pink tower with the Brown Stairs, please. Many, many thanks!

  • Reply Kayana November 19, 2017 at 4:45 am

    Hi, we’re just starting to work on brown stairs and pink tower.
    Could you please send me the extension card? Thank you so much

  • Reply Mercy January 23, 2018 at 9:14 am

    Hi. I have subscribe to your blog. Could you share your pink tower and brown stair extension cards ? thank yo so much

  • Reply Anya January 25, 2018 at 1:03 am

    Of course, I will email you ๐Ÿ™‚

  • Reply jeewon kim May 5, 2018 at 5:35 pm

    I’m just having so much fun browsing through your blog. Would you please email me those pink tower and brown stairs cards you are using? Thank you so much! =)

  • Reply Anya May 9, 2018 at 11:32 pm

    Thank you, I emailed you the cards, Enjoy!

  • Reply Anya May 9, 2018 at 11:33 pm

    Not sure if I emailed already, but I emailed all 3 sets just now again ๐Ÿ™‚

  • Reply Anya May 9, 2018 at 11:39 pm

    Did you ever received the cards? If not, just email me your email again ๐Ÿ™‚

  • Reply Anya May 9, 2018 at 11:40 pm

    Of course, please let me know your email ๐Ÿ™‚

  • Reply Anya May 9, 2018 at 11:41 pm

    Did you ever got the cards? If not, let me know your email ๐Ÿ™‚

  • Reply Anya May 9, 2018 at 11:41 pm

    Did you ever get the cards?

  • Reply Anya May 9, 2018 at 11:42 pm

    Did you get the cards?

  • Reply lorraine doyle May 20, 2018 at 6:33 am

    Could I have a copy of the extension cards please

  • Reply Marie August 8, 2018 at 7:37 am

    Hello Anaya,
    I am from Germany and have come to your sinde. Recently i brought the pink Tower and the brown stairs dir my Children. Your Extension Cards are Fantastic. Could you provide these to me? Thank you very much, Marie

  • Reply Anya August 10, 2018 at 8:23 am

    Wonderful! I just emailed them to you! Enjoy!

  • Reply October 3, 2018 at 4:04 pm

    Hi Anya,
    I run a small homeschool in Canada and I have just started to introduce pink tower and cross stairs and would love your extension cards. I have already signed up for your blog…
    Thank you much

  • Reply Anya October 4, 2018 at 7:53 pm

    Of course! Just emailed! Xoxo

  • Reply Priya January 10, 2019 at 1:50 pm

    Very helpful blog. Thanks in advance for all the information. Would be obliged to receive the extension card sets that you used for my little daughter. My email Id is

  • Reply naoual August 19, 2019 at 1:02 pm

    wonderfull!!!!!!!!!!! it is possible to have your cards of etension please?
    thanks a lot!!!!!!!!!!

    • Reply Anya August 19, 2019 at 4:57 pm

      Did you find the pdf?

    • Reply Anya August 19, 2019 at 4:57 pm

      Did you find the PDF? Let me know if you did!

  • Reply naoual August 29, 2019 at 5:56 pm

    i am sorry but i mot received the cards in pdf

  • Reply Catherine October 19, 2019 at 10:46 pm

    Hi there. Thank you for your detailed explanations. Much appreciated. Would it be possible to get a copy of your extension cards. I can’t wait to show these to my little ones.

  • Reply Fildzah December 6, 2019 at 1:23 am

    Hi, Anya

    I was just looking for the difference of pink tower and brown stairs to decide whether I should buy brown stair or not, since I already bought pink tower. But reading your blog, I cannot wait to have them both for my child! Lol

  • Reply Fildzah December 6, 2019 at 1:29 am

    Hi, Anya

    Actually I was just looking for the difference of pink tower and brown stairs to decide whether I need to buy brown stairs or not, since I already bought pink tower. But reading the extension of it in your blog, woww I cannot wait to have them both for my child! Lol

    I also read some other of your posts and they are really inspiring. I will keep reading all your posts about montessori ^^

    Anyway, can you also email me the cards for the extension? I would really appreciate it.
    Thank you very much.

    Keep inspiring ๐Ÿ™‚

  • Reply Jennifer March 17, 2020 at 3:22 am

    Hi Anya,
    I just purchased my brown stairs and am so excited to get started working with them together with the pink tower. Your blog is inspiring.
    Please send me the extension cards if you would be so kind.

    Thank you!

    • Reply Anya March 31, 2020 at 11:33 am

      So glad! Thank you! Sending them now

    • Reply Anya March 31, 2020 at 11:40 am

      sorry your email came back as undeliverable

  • Reply violeta reyna December 4, 2020 at 10:49 am

    I’d also love the extensions! i tried to find them in shop?

  • Reply Cassie H. January 4, 2021 at 8:36 am

    I also subscribed and would love the extensions. Your blog is a wonderful resource! Thank you so much!

  • Reply Sherry March 20, 2021 at 2:11 am

    Hi Anya

    We’ve justing working with pink tower and brown stairs.
    Could you please send me the extension cards?
    Thank you so much!

  • Reply Sujana April 23, 2022 at 2:53 am

    These are wonderful activities. Can you pls share the extension cards or the link to them? TIA


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