About us

Get to know our mission, who I am and the important people around me who are making all this possible in the first place. … or jump directly to the contact list.

Our Mission

To provide resources and guidance through the research-based imaginative world of Let's visor Numberland to inspire a generation of children to make connections to the world of mathematics and to see the joy in it!
We aim to do this through:

• Ensuring a range of a range of quality materials is available globally to assist early year teachers and parents.
• Linking with current research into child psychology and mathematics.
• Networking widely with professionals to continue to ensure Numberland is ‘best practice’ for all!

Barbara Schindelhauer

Founder ifvl and Numberland enthusiast

barbara schindelhauer let's visit numberland

I have a university background in Business, Psychology and Communication (Dipl-Kffr., MSc). After several years in Sales & Marketing, my new (and I guess always meant to be) career started while I was a stay home mom: Contributing to the development of children while letting the good things happen.

In 2004, I volunteered in my children’s kindergarten, and came across the Numberland research project by early childhood pedagogue Dr. Gerhard Friedrich. The impact on my children Tom (rising 5) and Tina (3) was incredible. Not only were they completely absorbed by exploring numbers and shapes, they also benefited in their overall development. And what fun we had!

I wanted to help spreading this powerful and lovely concept among teachers so that all children of any background wood do well, have a good start and equal chances. The same year, 2004, I founded the ifvl. Gerhard was so kind so become my scientific advisor and we have developed Numberland further.

numberland barbara schindelhauer first lets visit numberland project
My Numberland pioneers Tom (5) and Tina (3)

Ever since, I have been accompanying many projects and trained many hundreds of teachers, in Germany and internationally, in very different settings.

I am published co-author of the German best selling Numberland handbook Komm mit ins Zahlenland by Herder Publishing, Freiburg. With 75+k copies sold since 2004 and still in print!

I appreciate different settings and needs, so I am constantly developing and designing resources to ensure Numberland can take place anywhere in the world.

I am filled with gratitude for the positive feedback from the field, the international impetus, above all the difference Numberland makes to children!


  • Presenter: Education Influence Spotlight, Episode 6 (2022)
  • Member of the international teacher network Education Influence
  • Presenter: World Literacy Summit 2020
  • Trainer: Erasmus + Bilingual Education a Step Ahead (2020, 2016)
  • Interview: Early Years Summit by Kathy Brodie (2019)
  • Presenter: 2. Andiner Deutschlehrerkongress / Congress of Teachers of German as a Foreign Language, Chile (2015)
  • Presenter: BCME8 – British Congress of Mathematics Education (2014)
  • Presenter: Prepare for Life! – Raising Awareness for Early Literacy Education by Stiftung Lesen/Reading Worldwide (2013)
  • Keynote Speaker: Delta Kappa Gamma Society, Bi-annual European Regional Conference (2011)

Published articles

  • Gerhard Friedrich, Barbara Schindelhauer (2015). 
    Let’s visit Numberland: A highly emotive and efficient reason for reasoning.
    in: Primary Mathematics by the Mathematical AssociationVolume 19, issue 1, pp. 13-16.
    www.m-a.org.uk Download article
  • Gerhard Friedrich, Barbara Schindelhauer (2014). 
    Let’s visit Numberland: An Emotive, Story-based Contribution to Numeracy and Literacy Development.
    In: Jörg F. Maas, Simone C. Emig, Carolin Seelmann (eds.). Prepare for Life! Raising Awareness for Early Literacy Education. Results and Implications of the International Conference of Experts 2013. Stiftung Lesen 2014 (pp. 79-85)     
    Download this article
  • NCETM National Centre for Excellence in the Teaching of Mathematics (2011). 
    Focus on…Numberland.
    Early Years Magazine, Issue 25/2011


Gerhard Friedrich, Viola de Galgóczy, Barbara Schindelhauer (2011). 
Komm mit ins Zahlenland – eine spielerische Entdeckungsreise in die Welt der Mathematik.
Herder Publishing, Freiburg. Revised version of the first edition 2004.

This book is still in print, with over 75k copies sold!      

Dr. Gerhard Friedrich

Original Numberland author and my Scientific Advisor

Dr. Gerhard Friedrich Numberland
Dr. Gerhard Friedrich

From 2003 to 2006, Gerhard led a research project on early maths education, initiated by the Ministry of Culture of Baden-Wurttemberg/ Germany. The objective was to develop a concept based on brain research, and early childhood development. The most encouraging test results were published (peer-reviewed) and led to the first version of Let’s visit Numberland.

Gerhard holds a PhD in Pedagogics and teaches General Didactics at the University of Bielefeld, Germany. His scientific research focuses on developing didactic concepts for early childhood education. Before, I used to be a teacher for maths, technics, pedagogics, and psychology.

numberland number puppets lets visit numberland barbara schindelhauer

His son Lutz, then 4, was among the first children to shape Numberland. Today, his granddaughter Toni helps to develop new ideas.

Mario and Eli – my incredible artworkers

I’m blessed with these talented, dedicated friends:
Mario is a student of graphics design and takes care of our charming number friends as well as other designs.
Eli allowed me to use some of her Acrylic paintings for the artsy appeal of our Numberland resources.

And more Numberland Enthusiasts

… who help to light the fire of Numberland in their countries and make them grow! (Incomplete list: contact).


A glimpse of international Numberland travellers – and a wonderful proof that children enjoy the same things everywhere and that maths is a global language!
Numberland is also popular among international schools because of their children’s bilingual background.

It’s in fact hard to keep up …