Work together to build and protect a town that is under attack by giant robots. Choose to upgrade the homes within the town and grow the population, strengthen the town walls or actively attack the robots.

This version of the game focuses on building number sense with decimal numbers. Students are presented with 20 challenging questions that ask them to interpret, compare, and order decimal numbers with more than two decimal places. With every correct answer, students contribute to the town’s defence and development, choosing how to use their points strategically.

Let’s Defend: Ordering Decimals combines deep mathematical reasoning with cooperative gameplay. It encourages students to think critically about place value while making decisions that protect their shared town from robotic invaders.

Key Learning Outcomes

• ✅ Compare and order decimal numbers, including values beyond hundredths
• ✅ Apply knowledge of place value to make accurate comparisons
• ✅ Strengthen reasoning and logical thinking through number tasks
• ✅ Work cooperatively to apply mathematical strategies in context

How to Play

1. Students choose a character and enter the game as a team.
2. A question appears asking students to order or compare decimal numbers.
3. Correct answers earn points that can be spent to defend and upgrade the town.
4. Students choose whether to build homes, reinforce walls, or attack the invading robots.
5. The game ends when the robots are defeated or the town is overrun.

Ideas for Classroom Use

• 💡 Use during a decimals unit to deepen understanding of ordering and place value.
• 💡 Pair or group students to encourage collaborative problem solving and discussion.
• 💡 Replay the game with different town-building strategies and compare outcomes.
• 💡 Use results as a formative assessment for decimal comprehension and teamwork.

Top Teacher Tips

• 💛 Let students personalise their experience by choosing from six characters before the game begins
• 💛 Select the number of players or teams at the start of the game to suit individual, paired, or group play
• 💛 Send the QR code home for students to play as a homework or revision task

Let’s Defend: Ordering Decimals makes precision and place value practice exciting and meaningful. It’s perfect for reinforcing higher-order decimal thinking in a creative, team-based context.