Session 21: Decimals introduction, place value Session Title Decimals introduction, place value  Objective  By the end of the lesson, students will be able to: Understand what a decimal is. Identify the place value of digits in a decimal number (tenths and hundredths). Concept  Understanding decimal place value and comparing, ordering, and rounding decimals. Material required  Chart paper/board Decimal place value chart Paper coins or "play money" (rupees and Paise ) Decimal flashcards (e.g., ₹0.25, ₹0.50, ₹1.75) Methodology  Use interactive activities and guided practice to help students understand and apply decimal place value concepts. Session Duration   90 minutes Introduction activity (10 minutes): Ask: “Have you ever seen ₹0.50 or ₹0.75 on a price tag? What do they mean?” Explain that decimals are used to represent parts of a whole, like paisa out of one rupee. Main activity (65 minutes): What is a Decimal? (30 minutes) A decimal is a number that has a dot called a decimal point. It helps us show parts of a whole, like halves, tenths, and hundredths. Example: 0.5 means five tenths – like half of 1. Example: 1.25 means 1 whole and 25 hundredths. How to Teach Children to Read Decimals Step-by-Step Strategy: Start with the Decimal Point Teach: “The decimal point separates whole numbers from parts of a number.” Show examples like: 1.2 → one and two tenths 0.75 → zero and seventy-five hundredths 0.1 → zero and one tenth 0.5 → zero and five tenths 1.2 → one and two tenths 2.9 → two and nine tenths 0.25 → zero and twenty-five hundredths 9.01 → nine and one hundredth 6.007 → six and seven thousandths 0.009 → zero and nine thousandths 8.501 → eight and five hundred one thousandths. Activity 1: Decimal Card Game – Call-Out numbers (10 minutes) Hand out decimal cards. Call out decimal numbers and have students hold up the correct card. Give students numbers and ask: What digit is in the hundredths place? What is the value of the digit 6 in 0.62? 3.5 0.78 4.06 7.302 1.09 Activity 2: Place Value Questions What digit is in the hundredths place in 5.37? → Answer: 7 What digit is in the hundredths place in 0.62? → Answer: 2 What digit is in the hundredths place in 8.905? → Answer: 0 What digit is in the hundredths place in 12.749? → Answer: 4 What is the value of the digit 6 in 0.62? → Answer: 0.6 (six tenths) "Decimal Shopping", (25 minutes) Purpose: This fun activity introduces students to the concept of decimals in real-life using familiar Indian currency. Setup: Imagine you’re in a classroom “store,” and you have a set of items (pencil, eraser, notebook, etc.). Each item has a price tag written in decimal rupees (e.g., ₹0.75 for a pencil, ₹1.25 for a notebook). Example Items: Pencil = ₹0.50 Eraser = ₹0.25 Notebook = ₹1.00 Marker = ₹0.75 Instructions: Give each student “play money” (can be paper cutouts or imaginary rupees and paise). Ask students to "buy" an item by selecting one from the store, writing the price as a decimal (e.g., ₹0.75), and explaining what part of ₹1.00 it represents. Ask guiding questions like: "How many paisa are there in ₹0.75?" (Answer: 75 paisa) "What part of ₹1.00 is ₹0.25?" (Answer: One-fourth or ¼) Goal: To connect decimal numbers to real-life experiences with money. This helps students understand: Review Questions (5 minutes): What digit is in the hundredths place in 5.37? → Answer: 7 What digit is in the hundredths place in 0.62? Answer: 2 What digit is in the hundredths place in 8.905? Answer: 0 What digit is in the hundredths place in 12.749? → Answer: 4 What is the value of the digit 6 in 0.62? → Answer: 0.6 (six tenths) Follow-Up task (10 minutes): 1. What is the value of the digit 7 in the number 5.732? A) 7 B) 0.7 C) 0.07 D) 0.007 Answer: B) 0.7 2. Which number is smaller? A) 4.09 B) 4.9 Answer: A) 4.09 3. Round 6.843 to the nearest tenth. A) 6.8 B) 6.84 C) 6.9 D) 7.0 Answer: C) 6.9 4. What comes next in this sequence: 0.1, 0.2, 0.3, ___? A) 0.35 B) 0.4 C) 0.33 D) 0.5 Answer: B) 0.4 5. Write 7 tenths as a decimal. A) 0.07 B) 7.0 C) 0.7 D) 0.007 Answer: C) 0.7 6. Which is the correct order from smallest to greatest? A) 0.3, 0.03, 0.333 B) 0.03, 0.3, 0.333 C) 0.333, 0.3, 0.03 D) 0.03, 0.333, 0.3 Answer: B) 0.03, 0.3, 0.333 Expected learning outcome:  Knowledge building: Understand the concept of decimals Skill building Understand the concept of place value