Working in groups, it is recommended that students be grouped across a range of heights. Practice with objects both inside and outside classroom to encourage discussion about distance. Breakdown group responsibilities, i.e., recorder, measurer, and surveyor. Responsibilities may be rotated with each object to be measured. DAY 4 Present equation on board.
Groups discuss initial errors involved in roles as surveyors.
List attributes which contribute to success, as measured by the least number or errors made. Present their list to entire class. Whole group discussion about errors involved and the validity of initial hypotheses.