Buying some things 0 Overview Using this Resource Connecting to the Curriculum Marking Student Responses Working with Students Further Resources This task is about working out change from buying things. Some friends each saved up $15 and went shopping. Question a) Select all the things that costs under $15. Question b) Aleisha bought 2 things with her $15. She got $5 change. Select the 2 things she bought. Question c) Sandra bought 2 things with her $15. She got $3 change. Select the 2 things she bought. Question d) Geena bought 3 things with her $15. Select the 3 things she bought. Task administration: This task can be completed with pen and paper or online (with auto marking). Level: 2 Curriculum info: Maths, Number and Algebra, Number Strategies Keywords: money, addition, subtraction, change, spending Description of task: Students addition and subtraction to work out what they can buy with given amounts of money, and the change they will get. Curriculum Links: Learning Progression FrameworksThis resource can provide evidence of learning associated with Additive thinking, set 5 within the Mathematics Learning Progressions Frameworks.Read more about the Learning Progressions Frameworks. Answers/responses: Y4 (11/2013) a) Ticks Poster, Teddy bear, Pen and Photo frame and no others very easy b) Ticks Teddy bear and Pen and no others easy c) Ticks Poster and Photo frame and no others moderate d) Ticks Poster, Pen and Photo frame and no others moderate Based on an online sample of 37 Year 4 students. Diagnostic and formative information: Common error Likely reason Next steps c) Ticks Teddy bear and Pen (gives a total of $7.00) Close reading error The student misreads question as getting change from $10 rather than $15 Get students to read the question again carefully taking note of all elements of the problem. d) Ticks Teddy bear, Pen and Photo frame (gives a total of $15.50) Place value error: recombining decimals or whole numbers Students do not "carry" the $1 from the three lots of $0.50 and gets an answer of $14.50 Get students to work with playmoney coins and notes. They should recombine two lots of 50 cents into $1. If they also fail to recombine the ones and tens, use $1 and $10 notes. Also: Ask the students to find three items that do cost less than a total of $15. Change from $10 Spending pocket money How much change? Money computations Adding and subtracting more numbers Spending at the shop