This practical task has students investigate the surface area of three objects and whether this influences the rate of evaporation. Students fill in a table, and calculate the water loss and answer questions to show their understanding.
Information on particle size and boiling point is provided for three alcohols. Students use this to place these substances in order of particle size and increasing boiling point.
Students explain the function of the veins, waxy layer of the upper surface of the leaf, how the shape of the leaf traps light energy and why the upper surface of the leaf is a darker green than the lower surface.
Students view a set of images to answer questions about the camera angles used and the effects these create. Students also suggest sound effects and dialogue for the images.
Students calculate the number of free gifts distributed at a Tennis Championship given the number of people entering and the frequency of the gifts given away.
In this practical task, students estimate how many multi-link blocks equal the length of two common classroom items. They then check their estimate with the blocks, then measure with a ruler.
A bar graph showing the percentage of endangered species threatened by predation, competition, and/or habitat loss is given. Students use this graph to answer questions and explain the terms; predation, competition, and habitat loss.