Did you list all four moving characters? What else is in the game? Is the background a part of the game? The score? If time is short, call on students and have them tell you what to write. We also need to think about what is changing when we play the game. What about the Ruby? Does it get bigger? Does it change color?
Does it spin around? The only thing that changes about the Ruby is its position! Everything else about it is the same. What about the Dog? The Cat? Fill in the rest of the second column, listing everything that changes about each character. Did you notice that the Dog, Ruby, Cloud and Cat only change position, and nothing else? Did you notice the Score changes value? Students apply the number line as a tool for objectively defining location, first identifying how to apply it to describe the position of a character onscreen in one dimension.
This understanding is extended to two dimensions, ultimately motivating the use of a coordinate grid. For our videogame, we will place the numberline so that the screen runs from 0 on the left to on the right.
We can take the image of the Dog, stick it anywhere on the line, and measure the distance back to the lefthand edge. Anyone else who knows about our number line will be able to duplicate the exact position of the Dog, knowing only the number.
What is the coordinate of the Dog on the righthand side of the screen? The center? What coordinate would place the Dog beyond the lefthand edge of the screen?
The key point for students here is precision and objectivity. There are many possible correct answers, but students should understand why any solution should be accurate and unambiguous.
Have students discuss this. If time allows, have a student leave the room and let other students come up with ways to write down where the dog is on the board. Try positioning the characters at different places on the line, and have students tell you what their coordinates are. Try giving them verbal descriptions e. By adding a second number line, we can locate a character anywhere on the screen in either dimension. The first line is called the x-axis, which runs from left to right.
The second line, which runs up and down, is called the y-axis. A 2-dimensional coordinate consists of both the x- and y-locations on the axes. We can find the x-coordinate by dropping a line down from NinjaCat and read the position on the number line. The y-coordinate is found by running a line to the y-axis. A coordinate represents a single point, and an image is by definition many points. In this particular program, the center serves as the coordinate - but other programs may use another location.
The important point in discussion with students is that there is flexibility here, as long as the convention is used consistently. If time allows, invite volunteers up to the board to try placing NinjaCat and the Ruby at different locations. Have students identify the coordinates at the corners of the screen. For additional practice, have students bisect each side of the screen and label the midpoints.
When we write down these coordinates, we always put the x before the y just like in the alphabet! Depending on how a character moves, their position might change only along the x-axis, only along the y-axis, or both. Look back to the table you wrote in the workbook Page 1. Can NinjaCat move up and down in the game? Can she move left and right? What about the clouds?
Do they move up and down? Left and right? Fill in the rest of the table, identifying what is changing for each of your characters. Turn to Page 2 in your game-planning workbook, and look at the project sheet that has a picture of the NinjaCat game. What are the coordinates at the bottom-left corner of the screen? For practice, label the coordinates at the midpoint of each side of the screen, then label the coordinates of each of the characters.
Have students walk through some sample themes, to make sure they understand the format of the game. For example: A football game might have a quarterback for the player, a rival player for the danger, and a football as the target. A jungle game might have a monkey as the player, a snake as the danger, and bananas as the target. Fill out Page 3 in your workbook for your game, using your own player, target and danger.
Be sure to consult with every team. Be clear about what can and cannot be done! Hint: students who have a well-worded description of their images will be happier with any images you could find them. Try searching for "Person" versus "Jogger", for example. Students identify the order of operations for complicated arithmetic expressions through diagramming circles and evaluating the numerical answer.
This lesson introduces students to the Circle of Evaluation, which is a sentence diagramming tool for arithmetic expressions. This is a powerful way to understand Order of Operations, as it forces students to focus on the structure of expressions over their computed result. Students will be able to identify the order of operations in an expression that includes adding, subtracting, multiplying and dividing.
Given a Circle of Evaluation, students will be able translate the expression into the arithmetic expression it represents. Given an arithmetic expression, students will be able to complete a partially-finished Circle of Evaluation for the same expression. Given a bank of Circles of Evaluation and arithmetic expressions, students will be able to match them.
Students will be able to translate the structure of an arithmetic expression into a Circle of Evaluation. Math is a language, just like English, Spanish, or any other language. We use nouns, like "bread", "tomato", "mustard" and "cheese" to describe physical objects. Math has values , like the numbers , or , to describe quantities.
Humans also use verbs like "toast", "slice", "spread" and "melt" to describe operations on these nouns. Mathematics has functions like addition and subtraction, which are operations performed on numbers.
Just as you can "slice piece of bread", a person can also "add four and five". Students should begin to look at math as a language. To help them with this, you can discuss syntax and grammar of math, and its potential for ambiguity in the absence of a fixed order of operations. Help students see that math is a way to communicate calculations among people. The expression tells us to add 4 and 5. To evaluate an expression, we follow the instructions in the expression.
The expression evaluates to. What does evaluate to? Sometimes, we need multiple expressions to accomplish a task. If you were to write instructions for making a sandwich, it would matter very much which came first: melting the cheese, slicing the bread, spreading the mustard, etc. The order of functions matters in mathematics, too. If someone says "four plus two minus one", they could mean several things:. Depending on which way you read the expression, you might have very different results!
This is a problem, because we often use math to share calculations between people. For example, you and your cell phone company should agree upfront on how much you will pay for sending text messages and making calls. It is pretty stupid though. Like I said before, there's a program called GlovePIE that allows you to change the keyboard inputs before you even launch the game. I'll give you an example of how I have my keys bound with it Basically I made it so that the arrow keys move to the numpad so that you can still use the phone and switch the radio while using the arrow keys for movement.
It works great! Archangelus View Profile View Posts. No arrow key binding pretty much screws all left-handed gamers. Luckily I bought this during the sale and avoided all the DLC, but not being able to remap movement keys to the arrows is retarded.
E View Profile View Posts. Originally posted by KevCar :. Originally posted by cloaknite :. Last edited by That Guy ; 12 Oct, am. Cloudnin9 View Profile View Posts. And using the arrow keys just feels Like using number one in the pool. Sure no one will know, but its just not right you know? Shame on you. Sliding blocks around is made even more fun and enjoyable as you watch them wobble and shake with every movement.
Sokoban 3D's main goal is to get the blocks on screen onto the blue zones designated for them. You are in control of a bright orange block and your goal is to identify sequences that will lead to the blocks landing on the blue zone. The games difficulty can range from simple to excruciating quite easily as some levels require a bit of critical thinking and strategy to get past them. How to Play: Click play to begin. You are in control of the orange block and your objective is to slide the other blocks on the screen into the designated blue zones.
Use a variety of combinations as well as trial and error to get it right and progress to the next level. Play fun free online games using arrow keys, interactive PC puzzles to play with keyboard, no download: Maze games for kids to solve, hard logic games for PC, iPad, tablet, laptop, notebook.
Good puzzles for iPhone, Android mobile phone, girls, boys, teens to play now for free, games that use arrow keys only. Games Maze Games Online games using arrow keys. Rating : 5. The games difficulty can range from simple to excruciating quite easily as some levels require a bit of critical thinking and strategy to get past them How to Play: Click play to begin.
The game is compatible with Notebooks, Laptops and desktop PCs.
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