Part Two provides a brief instruction on the new content or approaches found in that strand. Parts Three and Four provide two authentic learning tasks, each consisting of a set of four activities with reproducible work sheets. Finally, each learning task includes further background for the teacher and detailed classroom instructions along with an answer key, scoring guide, and samples of student work. In the first unit of this book, students join Gulliver on his travels to Laputa, the land of mathematicians. Students estimate and calculate perimeters and areas of triangles and quadrilaterals shown on a grid.
Students decompose larger shapes into simple shapes such as right triangles.
They then compute perimeters using the Pythagorean relationship and apply area formulas. 20 centimeters squared and of perimeter 18 centimeters. In later activities for this unit, students help the mathematicians escape the King's tax on right angles by transforming rectangles into trapezoids of equal area. Some suggestions for creating your own scoring guides Part 2. Authentic learning activities in measurement.