What children learn on BobbyZumi
BobbyZumi is a calm learning world for Year 3 and Year 4 children in England, about ages 7 to 9. It currently has 12 short quests across maths, coding, creating, computers and online safety.
How it works
- Each quest takes about 10 to 20 minutes and can be paused at any time.
- A quest has a short story, a simple explanation, three questions, a hands-on activity and a reflection. Hints are there if a child gets stuck.
- Children choose from answers on screen; there is no free typing to other people.
- Some quests open after an earlier one is finished, so ideas build step by step.
- Anyone can try the on-device demo. A grown-up can create a family account to save progress, and review it in the PIN-protected grown-up area.
Maths
Number quests in Number Nebula practise core Year 3 and Year 4 number skills.
Number Machine Rescue
Year 3 · Number Nebula · about 15–20 minutes
Recognise the place value of each digit in a three-digit number (hundreds, tens, ones).
Column Calculation Bridge
Year 3 · Number Nebula · about 15–20 minutes
Add and subtract numbers with up to three digits using column methods, and estimate to check the answer.
Times Table Space Race
Year 3 · Number Nebula · about 10–15 minutes
Recall and use multiplication and division facts for the 3, 4 and 8 times tables.
Fraction and Decimal Lab
Year 4 · Number Nebula · about 15–20 minutes
Recognise and write decimal equivalents of tenths and hundredths, and link simple fractions to decimals.
Coding
Code Forest quests build ideas about ordered steps, repeating and making choices.
Guide the Forest Robot
Year 3 · Code Forest · about 15–20 minutes
Use a sequence of instructions, start a program with an event, and find and fix a bug.
Looping Leaf Parade
Year 3 · Code Forest · about 15–20 minutes
Use repetition in programs, and predict and debug repeated sequences.
Choice Cave
Year 4 · Code Forest · about 15–20 minutes
Use selection and a simple variable with input and output, and predict and fix a condition.
Game and maze design
Maker Mountain quests turn coding ideas into planning a maze or a simple game.
Build a Treasure Maze
Year 4 · Maker Mountain · about 15–20 minutes
Use coordinates and directions to describe position, and design a game with a simple win state.
Game Studio Challenge
Year 4 · Maker Mountain · about 15–20 minutes
Design a small game with an event, a player goal, a score variable and a win state, then test it and plan one improvement.
How computers and networks work
These quests look at what goes into and comes out of computers, and how messages travel.
Input Output Detectives
Year 3 · Computer City · about 10–15 minutes
Tell the difference between input, process, output and storage, and explain a simple system.
Network Message Mission
Year 4 · Computer City · about 15–20 minutes
Understand how connected computers pass a message, choose good search keywords and judge whether a result is trustworthy.
Online safety
Safety Harbour helps children think about what is safe to share and when to ask a grown-up.
Safe Sharing Detectives
Year 3 · Safety Harbour · about 10–15 minutes
Recognise personal information, keep privacy settings high, reject suspicious requests, block and report, and tell a trusted grown-up.
What this does and does not cover
The quests are based on objectives from the National Curriculum in England for Key Stage 2. They cover a selection of topics, not the whole Year 3 or Year 4 curriculum, and are meant to sit alongside school and family learning rather than replace them.