More battleships

More battleships

Auto-markingPencil and paperOnline interactive
Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
Working with Students
Further Resources
This task is about reading grid references.
TJ is playing a game of Battleships with his friend. He has set up his ships like this.
battleship-setup.png

Question

a)  TJ's friend fires a shot at B2. Select what gets hit.

    • battleships-mine-option.png

    • battleships-submarine-option.png

    • battleships-crusier-option.png

    • battleships-battleship-option.png

    • battleships-aircraft-carrier-option.png

    • It's a miss!

Question

b)  TJ's friend fires a shot at D3. Select what gets hit.

    • battleships-mine-option.png

    • battleships-submarine-option.png

    • battleships-crusier-option.png

    • battleships-battleship-option.png

    • battleships-aircraft-carrier-option.png

    • It's a miss!

Question

c)  TJ's friend fires a shot at H8. Select what gets hit.

    • battleships-mine-option.png

    • battleships-submarine-option.png

    • battleships-crusier-option.png

    • battleships-battleship-option.png

    • battleships-aircraft-carrier-option.png

    • It's a miss!

Question

d)  TJ's friend fires a shot at E5. Select what gets hit.

    • battleships-mine-option.png

    • battleships-submarine-option.png

    • battleships-crusier-option.png

    • battleships-battleship-option.png

    • battleships-aircraft-carrier-option.png

    • It's a miss!

Question 2Change answer

e)  TJ's friend wants to hit the battleship.
     battleships-battleship-small.png 
     Name one of the co-ordinates that would hit his battleship  
Task administration: 
This task can be completed with pencil and paper or online (with auto-marking displayed to students).
Copyright: 
Image: (C) NZCER
Level:
3
Curriculum info: 
Maths, Geometry and Measurement, Position and orientation
Keywords: 
grid references, grids
Description of task: 
Students identify positions on a grid using grid references.
Curriculum Links: 
This resource can be used to help to identify students' understanding of grid references.
Key competencies
This resource involves communicating information and ideas using mathematics and  interpreting visual representations, both of which relate to the Key competency: Using language, symbols and text.
Learning Progression Frameworks
This resource can provide evidence of learning associated with
Geometric thinking, sets 3-4
within the Mathematics Learning Progressions Frameworks.
Read more about the Learning Progressions Frameworks.
Answers/responses: 
   
Y6 (03/2016)
a) B2 - submarine very easy
b) D3 - It's a miss very easy
c) H8 - cruiser easy
d) E5 - mine very easy
e)
H3, H4, H5, or H6
Accept some derivation of the letter and numbers in the range h3-h6 (e.g., H-4, 3h, 4h, (h,3))
 very easy
a) - e)
All 5 correct
2-3 or more correct
1 or more correct
easy
 
very easy
 
Based on an online sample of 46 Year 6 students.
Teaching and learning: 
This task is about using simple grid co-ordinates.
Diagnostic and formative information: 
  Likely misconception Next steps
b) indicates a hit on the aircraft carrier
c) indicates It's a miss or the battleship
d) indicates a hit on the aircraft carrier
 
Students identify a square that is close to, but not exactly at the grid reference.
Students could be encouraged to look more closely and check the accuracy of their answer. 
Playing the game Battleships can reinforce understanding of how grid references work and the need for accurate plotting.
An iPad friendly version of Battleships can be found here: https://itunes.apple.com/nz/app/battleship-free/id520674172?mt=8
Students could also explore giving co-ordinates for described locations in the resource, Battleship grids.