## Maths KS3

**Welcome to the Tunnelworks KS3 Maths area**

Here you'll find four 'essentials' lessons, complete with interactive online content, student worksheets and detailed lesson plans. Each lesson challenges students to solve a realistic engineering problem to help design, build or operate the Thames Tideway Tunnel. You can dig deeper with follow-up ideas for more able students.

In lessons one and two, explore right-angled triangles and Pythagoras' theorem using simplified engineering drawings, and use co-ordinates to create a simple map of the proposed Thames Tideway Tunnel route.

In lessons three and four, use algebra to calculate how fast a Tunnel Boring Machine (TBM) can bore through the ground, and use percentages and ratios to explore how rainfall across London drains into four Combined Sewer Overflows (CSOs).

**CREST Bronze Awards **

Two projects are also outlined, if you wish to connect your work to this well regarded science award scheme.

**Research project one:** students can investigate how the weather and our water use are changing in London and how they create the need for an upgrade to London's sewer system. Investigative project: create two maps of your school grounds and buildings in as much detail as you can, using GPS for one map and a trundle wheel and compass for the other.

**Research project two:** students are set the challenge that their school is expanding and new buildings need to be built on the other side of a busy road. Investigative project: plan a tunnel to connect the two sites and produce a report. They will consider different challenges such as the geology of the ground, lighting, materials and equipment to be used.