# Semester 2 Level 1 Topic F

 Task Name : Number stories Task Level : F (Grade 5) Semester : 1 Topic : Introducing Algebra VC Strand : Patterns and Algebra Web Address : http://maths.crusoecollege.vic.edu.au/paF Equipment Needed : nil Victorian Curriculum outcome : Use equivalent number sentences involving multiplication and division to find unknown quantities Task description : Students create eight number stories, two involving addition, two involving subtraction, two involving multiplication and two involving division. For each story, the student must write the story, draw a picture and write a number sentence with a box representing the unknown number. They must then solve each story using inverse operations (you will need to explain what this is). Assessment options : Photographs of drawings; digital equivalents using Paint or similar. Teacher notes : Students can really struggle conceptually with this task: many donโt seem to understand the difference where the unknown is at the end of the story compared. For students lacking imagination, provide a scaffold to help them create a story: the video provides models which can be easily adapted to involve addition, subtraction, multiplication and division. Be careful with the subtraction stories: if the student has the unknown at the beginning of the story, things can get confusing.