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Lasse Leponiemi

Chairman, The HundrED Foundation
first.last@hundred.org

Transitioning students from block to text coding

The coding education system is broken. Students move from block tools like Scratch in primary school to real world text languages in high school—a huge leap. We solved this by stripping Java, Python, and C down into one simplified text language: Thadus. Delivered offline in a 3-month program, it’s a market-first bridge from block to real coding.

Overview

Information on this page is provided by the innovator and has not been evaluated by HundrED.

Updated February 2026
Web presence

2026

Established

4

Countries
All students
Target group
Our mission is to bridge the digital divide. We want to see young people from all backgrounds not only engage with our program but excel beyond it—progressing to strong universities, challenging their environments, and pursuing high-impact careers. Education should empower children from every walk of life.

About the innovation

Why did you create this innovation?

My mate Chinmay and I are high schoolers. We experience the issues within coding education firsthand and took it upon ourselves to fix them. The jump from block to text coding is too steep causing students to get disengaged, pressuring teachers. This is a global issue since most primary/secondary school curriculums mandate coding education. Moreover, with tech industries (notably AI) on the rise, we knew that knowing how to code was becoming a life skill. We wanted all youth to have access to digital skills and employment opportunities which is why we built an offline, affordable coding program. With Thadus, the transition from block to text coding is seamless, keeping youth engaged and making them future ready.

What does your innovation look like in practice?

Customers (individual students, families, robotics class providers, schools, governments, etc.) subscribe to our program monthly for three months. At the start of the program, they receive the installer for the Thadus app which can be downloaded only on devices for which access has been purchased. At the start of every month, customers receive the course for that month. Our 3 courses are Computational Thinking, Algorithms & Sequencing and Data Science. We provide them as printable PDFs to encourage handwriting which also helps balance screen time. The courses progressively increase in difficulty and include computational problems where students write code on Thadus alongside written responses. Throughout the program, students justify their reasoning, analyse data, and apply predictive analysis. Although we recommend our program for students in grades 5 to 9 (where this transition generally occurs), we welcome customers from all backgrounds!

How has it been spreading?

Since January 2026, more than 600 paying students have subscribed to our program across several nations. These include individual students/families and school students whose enrollments are paid by their organizations. We charge subsidized fees for rural schools to help bridge the digital divide while providing our program for free to charities. Currently, we have partnered with the Foundation of Goodness (FOG) and Educate 4.0 charities in Sri Lanka and South Africa respectively where thousands of underserved youth are on our program.

How have you modified or added to your innovation?

We have a thorough feedback process where customers evaluate not only the Thadus app and courses but our onboarding process and general customer service. This feedback informs software updates and stronger client relationships.

If I want to try it, what should I do?

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Implementation steps

Download and Install Thadus & Courses
At the start of the program, customers are introduced to their secure client portal. It contains the Installer for Thadus and Course 1 PDF- Computational Thinking (Questions and Answers) as well as tutorials and documentation. At the start of each month, the new course will be added to the portal for customers to download. Customers must only distribute the products to students/devices for whom access has been purchased.
Begin the Program
Customers access inbuilt tutorials on Thadus and support videos through their portal to learn how to use the app. They then progress through the courses, typically spending around 1 and a half hours per week, making the program easy to integrate into existing studies and daily life.
Program Completion & Feedback
At the end of the program, participants receive a Certificate of Completion recognizing their progress and effort. They are also invited to complete feedback surveys, helping inform improvements to the program.

Spread of the innovation

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