### Relating Addition and Subtraction

Objectives To find the missing addend in an addition sentence To write addition sentence with missing addend into subtraction sentence To give the relationship between […]

Objectives To find the missing addend in an addition sentence To write addition sentence with missing addend into subtraction sentence To give the relationship between […]

Investigating polygons with equal area Guillermo BautistaI am interested in integrating technology in teaching mathematics particularly on the use of GeoGebra. You can contact me […]

One of my favorite ways of presenting a problem is not presenting the problem at all but just letting learners observe first and then ask […]

Two or more triangles are similar if their corresponding angles are congruent. It also follows that if two triangles are similar, their corresponding sides are […]

Here is a dynamic worksheet for teaching and reviewing some geometric relations such as sum of angles in a triangle, angles of parallelograms, corresponding angles, […]

You can use the following applet to help your students discover the area of trapezoid. The only prerequisite knowledge is area of a parallelogram which […]

Number relationships provide the foundation for strategies that help pupils remember basic facts. Throughout mathematics in Kindergarten-Grade 2, students develop numerical fluency with conceptual understanding […]

Here is an activity that you can use to develop ideas related to the topic Exponents. You can use it as context to discuss the […]

You can use this dynamic worksheet to have students explore and discover the procedure of completing the square for solving quadratic equation of the form x2+bx=c. Note […]

Here is a dynamic worksheet you can use in problems involving chords of circles and diagonals of polygons. The figure produced by the worksheet not […]

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