Students discuss making an interval estimate in multiplication problems (i.e., getting a lower and an upper limit for the actual answer using the front-end and rounding-up estimation methods). They then use this method on two problems.
Student solve addition problems where the missing value is located in different positions. This may mean that students transform the problem into a subtraction one. Students reflect on the easiest and hardest problems, and explain their choice.
Students complete a cloze passage with 26 blanks about a boy stuck between some steps. A scoring guide with replacement words/synonyms and guidelines for interpretation are included.
Students explain how they can work out how many striped or shaded beads are needed for a number of repeated 'sets', and identify the number of striped and shaded beads for given numbers of sets.
Task: Use understandings about heat energy and insulation to describe how adaptations help Emperor penguins survive in Antarctica. Assessment focus: adaptations for keeping warm in cold conditions.
Task: Using statements from four people decide and justify whether or not each person supports wind farms. Identify which person has a misconception about wind farms, giving a reason. Assessment focus: identifying different perspectives.
Task: Make observations from a photograph, identify potential environmental problems giving reasons, decide which problem is the most important, and give reasons for the choice. Assessment focus: (1) observation, and (2) identifying and prioritising cause and effect relationships.
In this activity students progressively build up evidence for and against a new idea in pest control: using bumblebees to transmit a fungicide. Students practise argumentation skills and reflect on how they formulate opinions on environmental issues.
Students look closely at a photograph taken on the beach and record their observations. They think and write about the consequences of the things they see.
Use knowledge of insulation to answer questions about baked Alaska dessert, and how it compares to a chilly bin. Assessment focus: Interpreting diagrams, interpreting analogies, and using knowledge of insulation.