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Data Frosch

Learn Data, Tell Stories

Hands-on data training for journalists and other data storytellers.

Data Journalism Mentorship

1-on-1 sessions to level up your data skills, booked in bundles and scheduled around your time and project.

  • Flexible Scheduling β€” online meetings around your calendar, with Discord support in between.
  • Custom Learning Path β€” a personalized path matched to your project and goals.
  • Full Pond Access β€” includes trainings, resources, and the Discord community.

πŸͺ· The Pond πŸͺ·

A community for and by nerds in the newsroom.

  • Monthly Trainings β€” 2 online sessions per month, from spreadsheets to Python to data viz.
  • Resources & Tools β€” curated tutorials and practical guides for data journalism.
  • Discord Community β€” peer feedback, questions, and connection with fellow data journalists.
  • Newsletter β€” tips, new tutorials, and what's happening in the data journalism world.

Free Resources

Pondcast #5: Text embeddings and how to use them
Video May 14, 2026

Pondcast #5: Text embeddings and how to use them

What text embeddings are and how to put them to work in practice.

The bias hiding in your AI
Blog May 6, 2026

The bias hiding in your AI

Read the words as critically as you read the numbers β€” what a health-data Pondcast taught us about LLM bias.

The Pond #9: Embeddings, eggs and statistics
Newsletter May 6, 2026

πŸͺ· The Pond #9: Embeddings, eggs and statistics

Also: come learn about maps!

Pondcast #4: Finding Stories in health expenses data with Ada
Video Apr 17, 2026

Pondcast #4: Finding Stories in health expenses data with Ada

Uncovering narratives and insights from healthcare expenditure data.

The Pond #8: Don't make unit mistakes!
Newsletter Apr 8, 2026

πŸͺ· The Pond #8: Don't make unit mistakes!

Also: come learn about embeddings and how to find even more stories in data!

Pivot Tables
Guide Mar 31, 2026

Pivot Tables

Build intuition for what pivot tables do, how to read them, and how to construct them from a question.

Tidy Data
Guide Mar 31, 2026

Tidy Data

What tidy data is, the most common ways spreadsheets go wrong, and a checklist to confirm your data is analysis-ready.

Finding Stories in Data
Guide Mar 31, 2026

Finding Stories in Data

A step-by-step checklist to interrogate any dataset and surface story angles β€” from first look to context checks.

Stop making unit mistakes!
Blog Mar 31, 2026

Stop making unit mistakes!

Let the computer track your units and never miscalculate gigatons vs megatons again.

Pondcast #3: Calculate CO2 emissions with Thomas Goorden
Video Mar 25, 2026

Pondcast #3: Calculate CO2 emissions with Thomas Goorden

Discussing methods for measuring carbon dioxide emissions.

The Pitfalls of Percentages in the News
Blog Feb 18, 2026

The Pitfalls of Percentages in the News

Why percentages mislead, and what journalists can do about it.

How to Choose Colors for Data Visualization
Blog Dec 3, 2025

How to Choose Colors for Data Visualization

Color theory fundamentals and 4 essential tools for better palettes.

About the 🐸

Ada Homolova - Data Journalist & Educator

Ada Homolova

Data Journalist & Educator

Hi! I'm Ada. I am a freelance data & investigative journalist and teacher. Over more than 10 years, I made a lot of stories with small and big datasets and I am here to share what I learned along the way.

From the start of my career, I’ve loved helping other journalists get comfortable with data, brecause I believe these skills should be for everyone. Over the years, I’ve given countless lectures, taught at conferences like Dataharvest and NICAR, given guest lectures in the Master’s program in Gothenburg, and mentored journalists 1:1 through programs like IJ4EU.

I founded Data Frosch by accident, because I bought a frog hat last winter. It's a fun way to put myself out there and help others find me.

If you are curious about my extended portfolio have a look at my website. Connect with me on LinkedIN, or subscribe to personal newsletter!