Train the Brain Toolkit

Numbers and noticing: all three levels of ACE Cards and Draw Like a Scientist.

Ages 4 and up6 productsAges 4 and up
Rs. 5,394.00 Rs. 4,855.00 SAVE Rs. 539.00
Inside the box

What's in the box

CODAvailable across India
5 to 7 daysDelivery across India
5% to SLATEOn every order
Shipping & delivery
  • Dispatched within 2 to 4 business days
  • Delivered within 5 to 7 days across India
  • Free shipping on orders above Rs. 2,000
  • Cash on delivery available
Product details
AgesAges 4 and up

For schools

Tell us what you need. We'll reply within one working day with school pricing and a single invoice.

10,000+children mainstreamed
5,000+teacher workshops
100+schools partnered
20 yearsin education

See it in play

What a week actually looks like

One box, one rhythm. Here is how a week tends to go.

Monday Play a round

ACE Cards at your child's level.

Wednesday Draw something real

A leaf, a shell, a cup. Look first, draw second.

Friday Play again, harder

Try a level up, or a new rule.

Sunday Compare drawings

Put this week's drawing next to last week's. What's sharper?

Why we made this

One teacher. One scientist.

Vaishali Gupta spent twenty years in education watching bright children decide they were “bad at science”, usually before they were seven, and usually after being handed a worksheet.

The problem was never ability. It was that science arrived as a set of answers to memorise, instead of a question worth chasing.

So she built what she wanted for her own classroom: activities that need no lab, no screen, and no expertise from the adult in the room.

Every order funds the SLATE Program. 5% of what you spend puts learning materials into the hands of children who would otherwise go without.

Vaishali Gupta

Vaishali Gupta

Founder, One Teacher One Scientist
“A child who asks why is already doing science. My job was never to give them answers. It was to keep the question alive.”
20 years in educationHarvard learnerAuthor, all OTOS titles

Parents & teachers

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Before you ask

Questions parents actually send us

Why maths and drawing together?
ACE trains fast, flexible thinking with numbers. Draw Like a Scientist trains careful looking. Together they cover how a child thinks with numbers and with their eyes.
Do we use all three levels at once?
No. Start with the level that fits your child's age and move up when it starts to feel easy. The set lasts for years.