Channel: Happy Learning English
Category: Education
Tags: science for kidseducational videos for kidseasy learningeasy scienceparts of the cellchildrens videoseasy cellsap scienceeasy factsap themesriddleeducational gamesfacts for kidsmaths factslearning with sarahkids biologygames for kidsmath gamepreschoolessy videoslearning playingants crossing a bridgefun videosmaths games
Description: Discover hundreds of never-before-seen resources! Create your free account at my.happylearning.tv and start learning in the most entertaining way. What are you waiting for? Learning with Sarah, you'll find this out and much more by learning with Sarah... IT'S EASY PEASY đ - đSUBSCRIBE TO HAPPY LEARNING! bit.ly/HappyLearningTV đWeb site: happylearning.tv/en đFollow us on Facebook: facebook.com/HappyLearningTv Recommended video: đźQ&A GAME: VITAL FUNCTIONS youtu.be/nIuVvyxnBfQ ------------ Hello Happy friends! Are you ready to learn? Iâm Sarah, and today, weâre going to solve a very curious mathematical riddle. But donât think itâs going to be about adding, subtracting, multiplying or dividing. No, no, maths isnât just that! We also use maths to develop our creativity, and solve problems that we come across every day. Iâm going to show you a little riddle called the ants crossing crossing a bridge, and weâre going to see how to solve it! Itâs nighttime, and four ants are being followed by a hungry anteater. Suddenly, they come up to an old narrow bridge! One of them, has a light on its head so theyâre able to see, and she realises, that the bridge is so old, only two ants can cross at a time, so they will only be able to cross individually, or in pairs. And they always need the light, because otherwise, they canât see! The anteater will take 17 minutes to get to where the ants are, to eat them all! What can our ant friends do to save themselves? Letâs see, youâre the slowest, and youâre going to take 10 minutes to cross the bridge. Youâre going to take 5, youâll take 2, and because Iâm the fastest, I will take 1 minute. And we only have one light! And the anteater is going to take 17 minutes to get here, what shall we do? These little ants need our help, letâs get our thinking caps on! But if you need a little more time, pause the video. Have you figured it out? Letâs take a look! If two ants go together, they will take the same time as the slowest ant. So the best idea is that and 1 and 2 go together. Theyâve spent 2 minutes crossing. Now, ant 1 will cross back with the light, and she will take another minute. That means, in total theyâve taken 3 minutes. Who should cross the bridge now? Ant 1, will give the lamp to ant 5, and this one crosses the bridge with ant 10. If we add these 10 minutes, to the 3 we had before, weâve taken 13 minutes. Now, the ant that goes back with the lamp is ant number 2, who takes 2 minutes. So theyâve taken a total of 15 minutes, and the anteater is about to arrive! So, the ants weâve got left are the ones that take 1 and 2 minutes. How long will they take? Of course! itâs two minutes! And if we add them to the 15 minutes we had before, weâve reached a total of 17 minutes! Yes! weâve saved our little ants! And itâs all thanks to our maths! The truth is, maths are so much fun, and so helpful! Goodbye happy friends! See you next time! I hope youâre always ready to learn! Goodbye!