Preparation:

• Get out the ruler and the Eazymec plates required for the lesson (see the heading "Things you need").

Things you need:

• Piece no. 1 (2 pcs)

• Piece no. 2 (2 pcs)

• Piece no. 5 (2 pcs)

• Piece no. 8 (3 pcs)

Purpose:

Students will:

• Develop their ability to select and use appropriate mathematical methods for area calculation.

• Improve their ability to use and describe mathematical concepts in geometry.

• Develop their ability to conduct and follow mathematical reasoning.

• Learn to use mathematical expressions to discuss and explain questions, calculations and conclusions.

Introduction (approx. 10 min):

1. Discussion about dimensions:

   • Talk about what dimensions are and how they are read in centimeters.

   • Discuss what a balcony is and its function.

2. Scenario:

   • Describe that Chewy Beaver has received permission to build a balcony that is 55 cm wide and 70 cm long.

   • Ask the students if they can help Chewy build the patio within these dimensions.

Implementation (approx. 20 min):

1. Build the balcony:

   • Distribute the plates so that each student gets a piece.

   • Ask students to work together to lay out the boards and create a deck measuring 55 cm x 70 cm.

   • Use the ruler to measure the length and width of the built patio to ensure it meets the dimensions.

Conclusion (approx. 10 min):

• Collect all the pieces together with the students.

• Discuss any difficulties that arose and how the patio could be improved.

• Thank the students for their help with the balcony construction.

Curriculum connection:

• Geometry: Measurement of length and size, comparisons and estimates of quantities, and the use of modern and older units of measurement.

• Problem solving: Strategies for solving mathematical problems in student-centered situations. Formulation of mathematical questions based on everyday situations.

Student assistance:

• ​55 x 70 cm (width x length)