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Every year, thousands of young inventors show their ideas at NICEE. Some kids get invited to NICEE. The main goal of NICEE is to help kids know real problems and find ways to __________ them.

To support this __________, many schools now have invention clubs. Kids in the clubs work together. They look __________ ways to make life better. They might invent something to make a job __________ or make people safer.

For example, Lucca wanted to help people __________ his grandmother. She had to wear a breathing mask(面罩) in the hospital. That made it hard for others to hear her __________. So Lucca invented a new mask. It has a microphone. It __________ the person’s voice to a speaker(扬声器). Now users can talk with others.

Inventions can be simple. One winner, Maddox, made a new garden shovel (铁铲). The shovel has marks on __________ to help gardeners know how deep to dig their holes.

__________ kids choose an idea, they have to build a model that works. They cannot spend more than $50. The invention must be something new. It also must fit inside a certain space.

NICEE shows the best inventions from the states. Young inventors get to meet one another. They see others, great ideas. Some of them win prizes. They can __________ learn about ways to sell their inventions.