# 🧩Tokens & the Context Window

> Session 11 of the Claude PlayCamp for ages 8-13, done together with a parent: Tokens & the Context Window. Session 1 is free with no signup.

_Canonical HTML: https://codersbee.com/playcamps/claude/session/11/_

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SESSION 11 · UNDER THE HOOD

Find out how Claude actually reads — in tokens, not words — and learn the one habit that fixes most long-chat weirdness: knowing when to start a fresh thread, and what to carry across.

The big idea

Claude reads in tokens, not words, and everything in a thread sits on one desk — that desk is the context window. The desk is big, but available is not the same as useful: quality starts sliding long before it is full, and the free fix is a fresh thread carrying a handoff note.

What the two of you do

1.  Tokens: the pieces Claude actually reads
2.  The context window is a desk, not a library
3.  Available is not the same as useful
4.  The fix is free: a fresh thread, with a handoff
5.  5 prompt cards to run on the grown-up's account, and the When do you start a fresh thread? game

And what you keep

Save the split that made you laugh: the word that shattered into five ridiculous chunks, or the guess that was off by a mile. One line — the text, whose guess it was, and the real number — added to the Memory Box project, where ten saves are already waiting for it.

The bonding moment

The Token Guessing Duel

Mechanic: **prompt duel**. The step-by-step — who says what, in what order — comes with the full camp.

What you will both know afterwards

-   Claude reads in tokens — chunks of about three or four characters — not in letters or whole words.
-   Everything in a thread sits on one desk: your messages, Claude's replies, and anything you pasted.
-   If it is not on the desk, Claude does not know it. That is absence, not forgetfulness.
-   A window that is available is not a window that is useful — answers go vague long before it is full.
-   The free fix is a fresh thread plus a handoff note you asked Claude to write for you.

## This session is part of the full camp.

Sessions 2 to 15 come with the camp — the full text, every prompt card, the bonding moment written out step by step, the game, the grown-up corner, and the Memory Box save that ends each one. Price: $119 once (about ₹10,300), or free if your child already takes 1:1 classes with us.

There is no login on this site to hide it behind and no checkout to click — you message Manisha, she sends you the camp.

[💬 Join on WhatsApp](https://wa.me/919996465023?text=Hi%20CodersBee!%20We%20did%20the%20free%20session%201%20of%20the%20Claude%20PlayCamp%20and%20would%20like%20the%20full%20camp.%20Child's%20age%3A%20__%20.)[▶ Do session 1 free first](/playcamps/claude/session/1)

Finished this one?

✓ Mark session 11 doneYour own record, kept in this browser only and never sent to us — ticks are what move the progress bar.

Where you have got to0 of 15 sessions· first badge lands when a whole unit is done

-   ○Chat Like a Pro — 0 of 5
-   ○Claude's Superpowers — 0 of 5
-   ○Under the Hood — 0 of 3
-   ○Capstone — 0 of 2