Lower Secondary

Interactive STEM missions, maths investigations and hands-on teamwork for students aged 11 to 13.

Resources for ages 11–13

Ready-made lessons that bring maths into real situations: designing, planning, investigating and working as a team.

4 resources

Interactive STEM Project Ages 11–13

Maths • Geometry • Engineering

3D Shapes
Problem Solving
Teamwork

STEM project

Eco Park

Students work as engineers and designers to plan a modern eco park, calculating areas, surfaces and scale for 3D shapes, then present their zone to the class.

Interactive Escape Room Ages 11–13

Maths • Algebra • Data

Coordinates
Equations
Logic

Escape room

The Case of the Missing Medallion

A detective-style maths investigation: students work with coordinates, averages, equations and data to unlock the safe and identify the thief.

STEM Project Ages 10–12

Maths • Percentages • Money

Budgeting
Percentages
Planning

STEM project

Plan a School Trip

Students compare destinations, calculate transport, accommodation and food costs, and use percentages to fit their plan within a fixed budget.

Cross-curricular Lesson Ages 11–13

Maths • Geography • Data

Climate graphs
Density
Weighted model

Cross-curricular lesson

Mission South America

Climate graphs, river regimes, a logistics diagram and a weighted model help teams choose the site of an international research centre – in 40 minutes or as a two-period mission.

All four resources are available in English and in Bulgarian.