(
课件网) How do we use numbers Period 1 - Get ready （沪教版）四年级 上 Learning Objectives Learn about odd and even numbers Learn math vocabulary: plus, minus, equal Practice simple calculations in English Understand how we use numbers in daily life Today we'll learn about numbers and how to use them! Warm-up Let's start by thinking about what we know about numbers. Can you count from 1 to 20 in English 1 2 3 4 5 ... 20 Let's count together! One, two, three... Numbers Review 1-One 2-Two 3-Three 4-Four 5-Five 6-Six 7-Seven 8-Eight 9-Nine 10-Ten 11- Eleven 12- Twelve 13 - Thirteen 14 - Fourteen 15 - Fifteen 16 - Sixteen 17-Seventeen 18 - Eighteen 19 - Nineteen 20 - Twenty Activity: Listen and Repeat Listen to your teacher and repeat the numbers. Let's practice saying these numbers together! Math Symbols + Plus (+): "We say plus " - Minus (-): "We say minus " = Equals (=): "We say equals " Examples: 12 + 7 = 19 → "Twelve plus seven equals nineteen." 14 - 1 = 13 → "Fourteen minus one equals thirteen." These symbols help us do math in English! Odd and Even Numbers Numbers can be divided into two groups: odd and even . Even numbers can be divided by 2 with no remainder. Odd numbers can not be divided by 2 evenly. Even Numbers 2 4 6 8 10 Odd Numbers 1 3 5 7 9 Even numbers end with 0, 2, 4, 6, or 8. Odd numbers end with 1, 3, 5, 7, or 9. Odd or Even Circle the correct answer for each question. Is 4 an even number Is 7 an odd number Yes No Is 10 an odd number Hmm, let me think... Even numbers can be divided by 2! No No Yes Yes Addition - Plus (+) When we add numbers together, we say plus . "Ten plus two equals twelve." 10 + 2 = 12 + Ten plus two equals twelve. Let's try more examples! Subtraction - Minus (-) When we take away numbers, we say minus . "Ten minus two equals eight." 10 - 2 = 8 10 apples - 2 apples = 8 apples Ten minus two equals eight. Let's practice subtraction! Practice Time Circle the correct answer for each question. Ten plus two equals _____. 9 12 Five plus five equals _____. 10 15 Eight plus three equals _____. 11 13 Let's practice together! Choose the correct answer. More Practice Is this an even or odd number Circle the correct answer. 4 Even Odd 9 Even Odd 12 Even Odd 15 Even Odd Remember: Even numbers can be divided by 2, odd numbers can not! Complete the Sentence Choose the correct answer to complete the sentence. Ten minus two equals . 8 12 6 + 2 = 8 10 - 2 = 8 Let's solve this together! Think When do we use numbers in our daily lives Think about your day from morning to night. Telling the time Shopping and prices Phone numbers Ages and birthdays Numbers are everywhere in our lives. Can you think of more examples What We Learned Today Today we learned about numbers and how to use them in English. Odd and even numbers : Even numbers can be divided by 2, odd numbers cannot. Math vocabulary : plus, minus, equals Simple calculations in English Numbers in daily life : time, sho ... ...
