Daily Brain Teaser for the Curious
Daily Brain Teaser for the Curious!
We are launching a new feature on the school website — “Question of the Day”!
Every day, you’ll find a fun and engaging challenge in physics, chemistry, or math — and sometimes a biology question or a small psychology quiz.
It’s not just about knowledge — it’s about thinking, exploring, and enjoying the process!
Today’s question:
🔍 Francium is an alkali metal, it belongs to group I of the Periodic Table, like lithium, sodium, potassium and others. All metals in this group form oxides with a similar formula. Can you guess what the formula of francium oxide is?
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Tetiana Zhuravel
Ph.D., is the founder and visionary of the Rozumnyk online school.
She teaches school and Olympiad Math, Physics, and Chemistry. Her second superpower is making complex concepts and formulas understandable. Her classes have a creative and supportive atmosphere. She has over 20 years of teaching experience. Tetiana has extensive experience working with students in the homeschooling form of education.
Olga Surai
Ph.D., is a teacher of Biology and Chemistry.
In the classroom, she creates an atmosphere that encourages students to seek answers to questions, supports all the creative aspirations of students, and simultaneously provides a clear structure of knowledge.
Natalia Barna
teacher of Ukrainian and English
She has 2 years of experience. She falls in love with languages, fills dry grammatical structures with life, and supports at every step of language learning. She is a natural guide to the world of Ukrainian and English.