Project 5: Answers
1. If you need 6 sticky pistons for a red stone door, how many sticky pistons do you need for a red stone door three times as tall? 18
2. If you need two red stone torches for a red stone door, how many red stone torches do you need for five red stone doors? 10
3. If 15 chickens went through the door and 7 came back, how many chickens are still on the other side? 8
4. If 20 pigs went through the door and 9 came back, how many pigs are still on the other side? 11
5. If 20 cows go through the door and then 14 pigs also go through the door, how many animals have gone through? 34
6. If there are 45 chickens and they go through the door in groups of five, how many trips will they make? 9
7. If 30 pigs have gone through the door and 21 came back, how many pigs are still on the other side? 9
8. If 57 people have gone through the door and 42 came back, how many people are still on the other side? 15
9. If 32 zombies have gone through the door and 5 came back, how many zombies are still on the other side? 27
10. 121 sheep want to pass through the doorway, but only 11 can fit through at a time. How many groups will they have to form? 11
Project 5: Questions
1. If you need 6 sticky pistons for a red stone door, how many sticky pistons do you need for a red stone door three times as tall?
2. If you need two red stone torches for a red stone door, how many red stone torches do you need for five red stone doors?
3. If 15 chickens went through the door and 7 came back, how many chickens are still on the other side?
4. If 20 pigs went through the door and 9 came back, how many pigs are still on the other side?
5. If 20 cows go through the door and then 14 pigs also go through the door, how many animals have gone through?
6. If there are 45 chickens and they go through the door in groups of five, how many trips will they make?
7. If 30 pigs have gone through the door and 21 came back, how many pigs are still on the other side?
8. If 57 people have gone through the door and 42 came back, how many people are still on the other side?
9. If 32 zombies have gone through the door and 5 came back, how many zombies are still on the other side?
10. 121 sheep want to pass through the doorway, but only 11 can fit through at a time. How many groups will they have to form?
Project 5: How to Build a Red Stone Door
You need a clear space 8 blocks long and 5 blocks wide. See the diagram below. The directions for building the Red Stone Door will be given row by row.
Row 1: Dig a hole 2 blocks deep along the entire row. Place one red stone in each space. Cover the six middle squares in grass blocks and leave the two outside squares open. Place pressure plates in the two center squares of the row.
Row 2: You are only working with the outside blocks for this row. Dig holes 1 block deep and put red stone in those holes too.
Row 3: In the 2 outside blocks of this row, place red stone torches on the surface. Then place 1 stone brick block on top of each torch and put red stone on top those stone brick blocks. In the third block from the left, place three sticky pistons one on top of the other. The should be on their side and aiming toward the center. Do the same for the third block from the right. In the 2 center blocks, place six stone brick blocks as shown in the picture to form your door.
Row 4: Do the same as you did with row 2.
Row 5: Do the same as you did with row 1.
To open the door, step on any of the pressure plates.
Project 4: Answers
1. If a railway is 900 tracks long and half of those tracks are powered rails, how many powered rails are there? 450
2. If the other half of those tracks in question
#1 are detector rails, how many detector rails are there? 450
3. If you can go 15 tracks in 1 second, how many tracks can you go in 6 seconds? 90
4. If there are 4,000 powered rails and 4,000 detector rails, how many tracks in all? 8,000
5. If you can go 300 tracks in 20 seconds, how many tracks can you go in 2 minutes? 1,800
6. If a castle is 200 tracks away from your house and your mine cart can travel 10 tracks in one second, how long will it take to get to the castle? 20 seconds
Project 4: Questions
1. If a railway is 900 tracks long and half of those tracks are powered rails, how many powered rails are there?
2. If the other half of those tracks in question #1 are detector rails, how many detector rails are there?
3. If you can go 15 tracks in 1 second, how many tracks can you go in 6 seconds?
4. If there are 4,000 powered rails and 4,000 detector rails, how many tracks in all?
5. If you can go 300 tracks in 20 seconds, how many tracks can you go in 2 minutes?
6. If a castle is 200 tracks away from your house and your mine cart can travel 10 tracks in one second, how long will it take to get to the castle?
Project 4: How to Build a Railroad Track
Layer 1: Building the Railroad - Place an iron block at the edge of your town and then place a powered rail in front of the block in the direction that you want it
to go. Then place a detector rail in front of the powered rail. Repeat the process of the rails until you're happy with the distance. After that, place another iron block at the end of the power rail.
Layer 2: The Transportation - To finish, place a mine cart on the rail, and when you move inside the cart, the mine cart will move along the track.
Project 3: Answers
1. There are four people in the biosphere. If each person eats two potatoes a day, how many potatoes would they eat in a year? 2,920
2. If each person planted 3 flowers, how many flowers would there be if there were 11 people? 33
3. There are 40 chicks. If a snake eats 9 of them, how many chicks are left? 31
4. If the chickens are fed three times a day, how many times would the chickens be fed in four weeks? 84
5. There are 150 vitamins for 6 people. If each person eats 2 vitamins a day, will they last 2 weeks? No
6. There are five people and 19 apples on a tree. If each person ate 3 apples, how many apples are left on the tree? 4
7. There are 30 ears of corn. If the people pick off half of the corn, how much corn is left? 15
