Taps and tub – the sum Animation Play

The area of the whole rectangle Animation Play

The area of the whole rectangle – product of two sums Whiteboard exercise Play

The arithmetic mean for continuous data Student activity Play

The arithmetic mean for continuous data Whiteboard exercise Play

The correct position of the signs Whiteboard exercise Play

The correct result of the multiplication Whiteboard exercise Play

The correct sums Whiteboard exercise Play

The cost of a 3-day mountain trip Whiteboard exercise Play

The debt is increasing Whiteboard exercise Play

The debt is increasing. The debt is decreasing Student activity Play

The definite integral of the sum or difference of two functions Student activity Play

The definite integral of the sum or difference of two functions Whiteboard exercise Play

The derivative of a sum of functions Student activity Play

The derivative of a sum of functions Whiteboard exercise Play

The derivative of the sum and difference of functions Student activity Play

The derivative of the sum and difference of functions Whiteboard exercise Play

The eaves of the cottage roof Whiteboard exercise Play

The exact results of the addition Whiteboard exercise Play

The exterior angles of a polygon Student activity Play

The exterior angles of an n-sided polygon Whiteboard exercise Play

The formula for the square of a sum Student activity Play

The integral of the sum of two functions Student activity Play

The integral of the sum of two functions Whiteboard exercise Play

The integral of the sum, the sum of the integrals Animation Play