I am lost, can somebody help me understand this? Design a game of battleships using a co-ordinate grid. OK so far! To help your "ships" protect themselves select 4x2 step translation that would get them away from a further direct hit. (copied EXACTLY from the homework sheet) Explain the translation part to your opponent. Play the game with an adult and discuss the effect of the translation on the game. Now what the heck is a 4x2 step translation? Apparently we've got to design translation cards too? I'm stuck and Google isn't helping either, so can anyone here?
Maybe you can move 4 steps along one axis, and 2 steps along the other, after being hit? And then talk about why you'd move in that way... or something? Seeing as it says a further direct hit. But yeah, the thing's pretty bloody ambiguous. Good luck haha.
My Mrs is a 6th grade math teacher, so I think the same age group. I showed her this. She wasn't sure what it meant. She basically said the same and Kieran. I'd follow that. What a load of rubbish.
Kieran sounds right. Is it to do with vectors? [4/2] vector or something? I think it means move the battle ship away from the same spot it was hit, by transfering it to another set of coordinates
http://www.icoachmath.com/math_dictionary/Translation_Matrix.html Step 1: Let (a, b) represent the coordinates of D and (c, d) represent the coordinates of A’. Step 2: Write the coordinates as a matrix equation. Step 3: Step 4: Solve an equation for x and y. -2 + x = -1 Þ x = -1 + 2 Þ x = 1 -4 + y = -3 Þ y = -3 + 4 Þ y = 1 [Since, if two matrices are equal then their corresponding elements are equal.] Step 5: Solve the equations for a, b, c, and d using the values x = 1 and y = 1. a + x = 3 Þ a + 1 = 3 Þ a = 3 – 1 Þ a = 2 b + y = 3 Þ b + 1 = 3 Þ b = 3 – 1 Þ b = 2 -2 + x = c Þ -2 + 1 = c Þ c = -1 4 + y = d Þ 4 + 1 = d Þ d = 5 Step 6: So, the coordinates of D(a, b) and A’(c, d) are D(2, 2) and A’(-1, 5). Seems simple enough.:biggrin:
What I think they are trying to say is that you plan a 4x2 route that would stop the ship being hit. So the ship would be relocated 4 'sector' along the lower axis and then 2 'sectors' up or down. Then both players would plot the new location of the ship down and begin playing the game from where they think that the battleship is.
What ever happened to times tables?? Besides, i didn't think you could move your battleship during the game once you'd chosen it's original position??
Thanks for the replies. I'm pretty sure the translation means that the ship can be moved to a new position which is 4x2 grids away from it's original position, but only after being hit once. The trouble is, for those of us who grew up on a diet of battleships, that spaces marked as "empty", now become possible targets again meaning the game becomes a bit silly. Badly thought out I think.
It's matrices. when you multiply co-ordinates by a translation matrix it moves the position of those co-ordinates. for example to rotate by 90 degrees around the origin etc.
Admin you have to send your kid with this as the answer to his/her homework. It would be worth it to see the response you would get from the teacher.
I was sorely tempted GazzaH! My daughter had a choir rehearsal today and my Wife bumped into another teacher there so she asked for some clarification on this. 1. Play a normal game of battleships. 2. Play a 2nd game, this time with 4 translation cards, each with a 2 step translation, (ie 3,2) 3. When a ship is hit for the first time, choose a translation card and move that ship by the 2 steps on the card, IE 3 left and 2 down. Continue the game. 4. When the game is finished make observations. So we did this, here are my observations. 1. Using translations on a game of battleships truly ****s up a good game 2. See point 1. This makes my year 9 daughters maths seem like a walk in the park.
It just defeats the whole point of the game. Still it beats maths coursework. My sister had to do it for gcse, luckily i was the first year that didn't. Apparently that was ridiculous stuff.
The answers here are correct to what translation means, I'm learning it now as matrices are used alot in 3D games programming and that gives me a headache. So basically translation equlas movement of the ship by a set of coordenates(sp) so the ship moves by 4 squares by 2 squares in the from the orign of the ships original postition.
