The study plan that Lu Manxi has formulated for Wu Siming this summer has not changed much from last year. She still focuses on strengthening English, mathematics and physics, and still focuses on strengthening the foundation. It is not too late to start the second round of review of the questions.

In addition to reviewing by himself, Wu Siming also has to tutor his sister physics and chemistry this summer.

When he got home, Wu Siming looked at the rice left for him, and the rice was not in appetite. Wu Siming looked at the refrigerator, "Why don't there be no watermelon?"

Liu Yumei said: "I've finished eating, I'll go out to buy it after dinner."

"I don't want to eat."

After steaming in the classroom for a whole day, Wu Siming wanted to have a cool mouthful.

"I'm not full," Wu Sifan whispered to his brother: "The food today is not delicious, there is too much salt. Let's go out for some barbecue."

"If you pay the bill, I'll go."

Wu Siming went to the bedroom to get his jersey and took a shower.

Wu Sifan had no problem, so he went back to the bedroom to change his clothes and found fifty dollars to carry it.

After taking a shower, Wu Siming became much cooler, more comfortable, and hungry, so he was about to eat the food left by his mother. Seeing that the old girl came out of the bedroom and was ready to go out to eat.

"Dad, go?"

Wu Siming's father who reads the news hushed, how could he forget his father like this?

Wu Qingping signaled to leave first.

It was past seven o'clock, and after going out, Wu Siming and his sister went to the community night market.

Wu Sifan first ordered two bottles of the cabin, and the menu was for the brother to ask him what he wanted to eat.

Wu Siming is not polite, "Fifteen skewers of lamb, two skewers of chicken wings, and one scone,"

"Brother, please be careful, I brought it with me fifty dollars. I still have to buy something when I go back tonight." Wu Sifan came over and said, "You order a staple food and prepare a barbecue to eat!"

"Just just need a string of chicken wings, you can order another staple food."

Wu Sifan was not that hungry, she just wanted to eat two skewers of meat and then drink fruit beer.

"Then you make me want to eat whatever you want."

Wu Siming scratched his nose, and wanted the chicken wings and scones, so he asked for a vegetarian spice and a casserole cutter.

Wu Sifan roughly calculated that he was thirty, okay, who made me so eatable?

"Pick up a man."

The fruit beer came up, and Wu Sifan looked for it and found no one to start.

Wu Siming pried open it with a pair of chopsticks.

Wu Sifan said: "Jin'er is so big. Do you often drink outside?"

"I am a good person in physics. Give me a fulcrum and I can pry the earth," Wu Siming said in a sniff: "Who said? Newton or Archimedes?"

"Archimedes, I'm so embarrassed to say that physics is good."

Wu Sifan despised it, so he picked up the beer and touched it. After drinking it, he twitched his tongue and skewed the meat again. It was delicious.

The two of them finished eating slowly and bought a watermelon and went home slowly.

"Study hard during the holidays, and learn hard too. The next semester is the first to start chemistry, so it's easier to start school."

Liu Yumei reminded the bastard and his daughter who had enough food and drink.

"oh."

Wu Sifan dug out his brother's chemistry book in the third year of junior high school and asked him how he could learn it.

Wu Siming said: "Remember the twenty first before the periodic table of elements."

"Hydrogen, what's the second one, read he?"

Wu Sifan turned to the periodic representation of the elements.

"Reading hai, four tones." Liu Yumei looked at the bastard and said, "Xiao Ming first taught everyone the pronunciation."

"There is a pinyin in the book," Wu Siming lay on the lower bunk and played with his mobile phone. "I listened to it, I only said it once, 1 hydrogen, 2 helium, 3 lithium, 4 beryllium...13 aluminum, 14 silicon...19 potassium, 20 calcium."

"Do you need to remember something, s, n, and 1.008, 4.003 or other numbers?"

Wu Sifan looked at these numbers with big heads.

Wu Siming said: "Just remember the element names, symbols and ordinal numbers."

Wu Sifan said: "Why don't you read the second one? It's so easy to remember. Just like the third one, lithium, the symbols are as easy to remember as the pinyin of Chinese characters."

"Because that is an English abbreviation, the periodic table of elements was not invented by our country."

Wu Siming thought so with his older sister in front of him.

“Water, h2o, carbon dioxide, co2, h2co3, is really hard to remember,”

Wu Sifan was thinking about something.

"Don't develop the habit of reading letters from the beginning, read hydrogen 2 oxygen, carbon 2 oxygen, hydrogen 2 carbon 2 oxygen 3, see h in chemistry and you read in your mind that is hydrogen, not h,"

Wu Siming corrected her sister. Some people in the high school class read letters, and Wu Siming was particularly distorted.

Wu Sifan said: "Isn't it easy?"

Liu Yumei said: "It's easy to remember it."

"Okay," Wu Sifan said: "What else do I need to see now?"

Wu Siming said: "Remember to look at other elements in the first twenty elements, such as chemistry in junior high school. I didn't have tutoring during the holidays, and I just took the exam for 80s at any time in the third year of junior high school."

"You may only get over 80 after reading it, but it's easy to lay a good foundation in high school."

Liu Yumei told her daughter not to look at her brother.

The next day, the summer vacation period officially started.

Wu Siming and his sister were at home and studied while the weather was cold in the morning.

Finally, there are no annoying book-style holiday homework, and instead they are test papers. Teachers of each subject have handed out five sets of test papers, and the amount of homework is actually quite large, but book-style winter and summer homework is enough since elementary school.

"Brother tell me about the quadratic equation of one-percentage."

Wu Sifan opened up the math book in the third year of junior high school.

"One-variate quadratic equation," Wu Siming asked to see how the textbook was explained in junior high school. "As the name suggests, there is only one unknown number, and the number of unknown numbers is 2, and a does not equal 0..."

"The method of matching is to first turn the quadratic term coefficient into 1, then move the term to move c to the right of the equal sign,"

Wu Siming felt that solving quadratic equations in junior high school was really troublesome, especially the matching method. He couldn't understand them at the beginning of junior high school, but the big reason was that the math teacher was not good.

"Work the method of doing this question."

Wu Siming found a question for the old girl to practice.

"Simple method or formula method?"

It is still convenient to have an old man. Wu Sifan felt that classmates who don’t have brothers and sisters at home can only sign up for classes during holidays. She just needs to be at home, and she is one-on-one, and she asks questions as much as she doesn’t know how to ask questions.

Wu Siming said: "What questions do you look at? The formula method is widely used and can be used in high school. I have forgotten about some special equations in junior high school."

Wu Sifan said: "Then I just use the formula method directly? Tell me the formula method."

"Some questions are simple."

Wu Siming knocked on calligraphy with his pen.

"How do I judge which method is simple when doing the test?"

"I'll tell you later, there are conditions for judgment."

“…”

The weather was too hot, and neither brother nor sister wanted to cook at noon, nor did they want to go out to eat.

"Brother, the cold dishes you mixed are delicious."

Wu Sifan said with a smile.

"Foodie."

Wu Siming glanced at what was in the kitchen, the leftovers from last night, the cakes my mother made yesterday morning.

Let's eat it together. Wu Siming heated the leftovers and cakes, and half a ham, cut them into slices and put them on the plate, and prepared to eat them directly. He washed two tomatoes and cut them into pieces and sprinkled some white sugar. This is today's lunch.

“This is too simple.”

Wu Sifan thought it was simple and meaningless. It had meat and vegetables. The ham was delicious without stir-frying, and she didn't know what to say.

Wu Siming took out half a watermelon from the refrigerator, cut it in half, and put two small spoons on the dining table.

There are also fruits. Wu Sifan really admires me. I have too many ways.

"How many do you remember the periodic table?"

Wu Siming glanced at him.
Chapter completed!