#GMSL2025 Lesson: Pelmathism Memory Game
Once you have registered, we will send you a link to the lesson and further instructions
We have volunteers translating into Spanish, Catalan, French, Serbian and Polish. If you would like to volunteer to translate it into another language, please send us an email hello@gtenmaths.org. We would also appreciate translations of all the instructions and emails.
The same lesson for thousands of classes all around the world.
Bridges Elementary, USA, #GMSL2023, Beltway Around the World
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The registration form is on this page.
Together, let’s break our all time record of over 50,000 participants in 2025.
The same lesson for learners everywhere.
Join thousands of children around the world on in 2025 for a 30 minute Global Maths & Science Lesson for you to do at home, in school or anywhere, at any time to suit you!
When you register, please give us the best numbers you can. You are not making a commitment to participate in the event, you are only registering interest and giving us an idea of how many participants to expect. By registering, you will receive an email with a link to download this year’s full lesson.
The game we are playing is in our new book, Let’s Play Mathematically. You can order a copy now here.
Once you have completed your lesson, please post pictures with hashtag #GMSL2025. Keep track of the hashtag to see what thousands of learners around the world are doing.
Please submit your actual numbers after you have done the lesson. The submission form is on a separate page, please click here to reach it.
You can then submit the actual numbers of participants on the form. Please post photos on social media using #GMSL2025 hash tag.
We will then send you an email with instructions to download your certificate of participation.
Register below for the 2025 Global Maths and Science Lesson
Donations
We ask all participants to donate, even if you can only manage $1
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We are raising money to fight poverty and inequality by improving the skills and life chances of disadvantaged children in developing countries through empowerment of teachers with training, resources and support.
If this sounds like a great cause to you, please choose the amount you wish to give before submitting your registration. You will have another opportunity to make a donation when you submit your final numbers after the event. We deeply appreciate any donation, no matter how small and we also welcome all participants whether you donate or not.
Looking to submit your final results? Click here