GO SOLO 2.14 (AS91269)

Achievement(Multi-structural)
The student has applied systems of equations in solving problems.
The student correctly selects and uses methods with systems of equations.
They have demonstrated knowledge of concepts and terms and communicated
using appropriate representations. Anyone of these three situations is required
(1) A proposed fence crosses the drain.
(2)Irrigator crosses the drain.
(3) Irrigator crosses the fence.

forming Achievement with Merit(Relational)

The student has applied systems of equations, demonstrating relational thinking

in solving problems. The student has selected and carried out a logical sequence

of steps. The student has related their findings to the context or communicated their

Thinking of using appropriate mathematical statements.

The student correctly forms the equation for the Irrigator as

and uses the equation of the drain to form a quadratic equation.

This equation is then solved to form the points. The student then indicates

that both points are important as bridges will be needed at both for the irrigator to cross the drain.

OR

Using the equation for the irrigator and the proposed fence the student correctly

forms a quadratic equation.  The student then solves this equation to indicate

that the proposed fence intersects with the irrigator at two points .

The student clearly communicates his/her findings in the context of this problem.

Sensible rounding is required

Achievement with Excellence(Extended Abstract)

The student has applied systems of equations, using extended abstract thinking, in solving problems.

The student has used correct mathematical statements or communicated mathematical insight.

For example:

Using the equation for the irrigator and the proposed fence the student

correctly forms a quadratic equation.  The student then solves this

equation to indicate that the proposed fence intersects with the irrigator at two points

sets of points. Then use discrimination set up to resolve the ranges.