Problem: CHAPTER XIII

THE FIGHT AT THE BOATHOUSE

Inside of a week the newly-elected officers felt perfectly at home in their various positions. Captain Putnam's idea of allowing only such cadets to be candidates as could fill the positions properly had borne good fruit, and the battalion was now in better condition than ever before.

Contrary to general expectations, Larry Colby, as major, proved a strict disciplinarian when on parade. In the playground he was as "chummy" as ever, but this was cast aside when he buckled on his sword and took command.

"This is as it should be," was Captain Putnam's comment. "And it is the same throughout life: play is play and business is business."

As a captain Dick was equally successful and Tom also made a good second lieutenant. Company A was speedily voted superior to the others, when drilling and when on the march, and consequently became the flag bearer for the term.

"This is splendid!" said Dick, when the announcement was made. And then he went at Company A, to make the cadets drill and march better than ever.

But though the students gave considerable time to military matters, they were not permitted to neglect their regular studies, and to their honor be it said that the three Rover boys pitched in with a will.

"If I can't be an officer I'm going to be a high grade student anyway," said Sam, and kept his word. Books suited him better than did military glories, and soon he was at the top of his class in almost every branch of learning.
1. Where the event happened?
2. Who wa regarded a very stern person?
3. Was he like that everywhere?
4. Where was he more relaxed?
5. Going back - who were feeling good about their surroundings?
6. Who was in command of them?
7. Did he get good results?
8. How is the unit faring now?
9. Who else had the same route?
10. Who was Tom?
11. Is there any name for the unit?
12. What is that?
13. How was the unit ranked?
14. What was one of their big achievements?
15. Was the commander happy about that?
16. What he did after hearing that?
17. Did the unit has to anything else than physical activities?
18. What was that?
19. Was Sam serious about his education?
20. Did he do well in that?
Answer: 1. the boathouse
2. Larry Colby
3. No
4. In the playground
5. the newly-elected officers
6. Captain Putnam
7. Yes
8. it's in better condition than ever before
9. unknown
10. second lieutenant
11. Yes
12. Company A
13. it was voted superior to the others
14. they became the flag bearer for the term
15. Yes
16. he made the cadets drill and march better than ever
17. Yes
18. they studied
19. Yes
20. Yes

Problem: Briana, a student at John Fenwick School in Salem County, US, has a lot of free time. The 13-year-old girl used to hang out on the streets after school. "I know it wasn't good, but I really had nothing else to do," Briana said.

Briana was not alone. Many kids in her city had too much free time and nothing to do. To solve this problem, four school districts in Salem began a program called Big Brothers/Big Sisters. The program helps students make good use of their after-school time. Big Brothers/Big Sisters invites _ to help students in grades 6 to 8 build healthy relationships and take part in productive activities.

The "Littles" and the "Bigs" are nicknames for students and mentors. Most mentors are teachers. The "Bigs" and "Littles" usually meet once a week. They play games, share stories and go on trips.

The program has already helped many Salem students.

Briana's mentor is the school principal , Syeda Woods. Woods took Briana ice-skating, to pizza parties and for a visit to Longwood Gardens in Pennsylvania. "When I got out, I saw that Salem is a very small place," Briana said. "The program helps me experience the outside world and see many new things."

Kathy Jennings, 13, said she was very shy before, but now is much more open.

"In the program, I see my mentor as a big sister, not a teacher. I can tell her anything," Jennings said. "And she has taught me a lot about making good decisions. I think it will make a big difference in my life."
1. What is the kids' program called?
2. What does it help kids do?
3. What grades is it for?
4. How often do they meet?
5. What do they do together?
6. Did it help Kathy?
7. How old is she?
8. What about Briana?
9. What school does she go to?
10. Is she typically busy?
11. What did she used to do before the program?
12. Who is her mentor?
13. Where did she take her?
14. What has Kathy learned from her mentor?
15. How does she see her?
16. Does she think this lesson will be impactful in her life?
17. Who started the program?
18. Has it been helpful to many or few Salem students?
19. Which of the two? Many or few?
20. What are the nicknames for the participants?
Answer: 1. Big Brothers/Big Sisters
2. make good use of their after-school time
3. 6 to 8
4. once a week
5. play games, share stories and go on trips
6. Yes
7. 13
8. 13
9. John Fenwick School
10. No
11. hang out on the streets
12. Syeda Woods
13. ice-skating, to pizza parties and for a visit to Longwood Gardens
14. making good decisions
15. as a big sister
16. Yes
17. four school districts in Salem
18. Yes
19. many
20. "Bigs" and "Littles"

Problem: The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume. The symbol most often used for density is "" (the lower case Greek letter rho), although the Latin letter "D" can also be used. Mathematically, density is defined as mass divided by volume:

where "" is the density, "m" is the mass, and "V" is the volume. In some cases (for instance, in the United States oil and gas industry), density is loosely defined as its weight per unit volume, although this is scientifically inaccurate this quantity is more specifically called specific weight.

For a pure substance the density has the same numerical value as its mass concentration. Different materials usually have different densities, and density may be relevant to buoyancy, purity and packaging. Osmium and iridium are the densest known elements at standard conditions for temperature and pressure but certain chemical compounds may be denser.

To simplify comparisons of density across different systems of units, it is sometimes replaced by the dimensionless quantity "relative density" or "specific gravity", i.e. the ratio of the density of the material to that of a standard material, usually water. Thus a relative density less than one means that the substance floats in water.
1. Are they densities of everything the same?
2. What is the densest elements at regular conditions?
3. What is density of a substance?
4. How is defined mathematically?
5. What does V stand for?
6. What about P?
7. And m?
8. Is the p used actually the English one?
9. What language is it?
10. Which letter?
11. What is another symbol for density?
12. Who gives weight per unit volume as the definition?
13. Is this a good definition?
14. Would you use it in science?
15. What would be a better term for that definition?
16. Where is density the same value as it's mass concentration?
17. To make comparisons easier what stands in for density?
18. What's an example of that?
19. What's another one?
20. What is the relative density of something that floats?
Answer:
1. no
2. Osmium and iridium
3. its mass per unit volume
4. mass divided by volume
5. volume
6. density
7. mass,
8. no
9. Greek
10. rho
11. D
12. the United States oil and gas industry
13. no
14. no
15. specific weight
16. For a pure substance
17. A dimensionless quantity
18. relative density
19. specific gravity
20. less than one