At a basic level the task provides a setting for consolidation and practice of basic addition and multiplication of pairs of numbers from 1 to 10.
This leads naturally into a consideration of the distribution of results in the 10 x 10 multiplication table as a probability sample space.
Number and Probability
The task should be accessible to all students and provide an interesting competitive setting for practising basic arithmetic.
Ideal as a groupwork activity that could promote whole class cohesion. The random generation of the numbers introduces a chance element, meaning that success is not simply a question of mathematical ability.
In addition to this overview there are
The spreadsheet is needed for teacher use to generate the questions that students do without any calculator aids. (If the classroom has a 10 x 10 multiplication grid displayed, it should be removed for this activity.)
Software such as Excel, Autograph or Geogebra could be used for the statistical analysis of a distribution.
Formulae for generating random numbers in a spreadsheet such as =INT(RAND()*10+1) along with the use of mixed absolute and relative references to efficiently generate the 10 x 10 multiplication table, e.g. =$B41*I$2.
Developed by Tom Rainbow at Ivybridge Community School.