"Look!" said Linh. "The wheels are than yesterday."
Minh was excited. "I love ! We can make a small wind turbine," he whispered to Linh.
"That's !" the judges said. "How does it work?"
, the three friends met at the park near Linh's house to test their small solar panel. The sun was shining brightly. bai tap bo tro tieng anh 6 i-learn smart world
, they went to the library to research. While looking for books, they met Tom. Tom was from Sydney, Australia. He was new to the school.
Tom explained, "The solar panel catches light and turns it into electricity. The battery stores extra energy, so the car can run ."
Linh wasn't sure. "I prefer . But okay, let's try!" We can make a small wind turbine," he whispered to Linh
"Class, next is our annual Science Fair ," she announced. "You will work in groups to create a project about energy ."
The three friends cheered. "We make a great team!" Linh said.
Minh thought for a minute. "We need a battery to store energy for . That's the solution!" The sun was shining brightly
"You're right!" Minh agreed. "The the sunlight, the faster the car goes."
They worked hard every day after school. Linh painted the car to make it look beautiful. Tom wrote the science report. Minh connected the wires and the battery.
But suddenly, a big cloud covered the sun. The car stopped.
It was , and the bell for English class rang at 7:30 AM . Minh was sitting next to Linh. Their teacher, Ms. Hoa, had a big smile.