Student’s Book page 23 6 Find five objects. Estimate and then measure how long and how heavy each one is. •
Say
Let’s practice estimating and measuring . Point to the
chart and explain that students are going to copy and
complete it. Draw the chart on the board, if necessary,
and make sure students understand the column
headings. Say
Find five objects. For each object, think: How long is it? How heavy is it? Point to the Estimate
columns of the chart. Say
Then measure. Point to the
measurement columns. Demonstrate with one or two
objects of your own (e.g., a basketball and a banana).
Talk about your own estimates, e.g.,
I think the basketball weighs about 500 grams. I think the banana is about 20 centimeters long. Point out that we use the verb
weigh to estimate weight. (We don’t say, “I think it’s about 500
grams heavy.”)
•
Students all copy the chart, then work in pairs to
decide on items and write their estimates of length and
weight. Circulate and help. Encourage students to tell
you about their estimates, e.g.,
I think it’s about 1
8 centimeters long. I think it weighs about 350 grams. Hand out measuring tapes and call students to the
front to use your weighing scales for them to complete
the measurement columns. Circulate and help. Ask
students
How long is it? How heavy is it? Were your estimates right? If time allows, students can calculate
the difference between their estimates and the actual
measurements and compare in small groups.
Workbook page 1 – Evaluation 1 Look at Mr. Wood’s to-do list. Complete
