Lesson
1 – Estimating Sums
To encourage students to have fun on the Web while learning about Estimating
Sums, here are some games and interactive activities they can do on their
own or in pairs.
Goal
Estimate in addition situations.
Builds Upon
Student Book pages 148-149
Instructions for Use
Estimation
Contraption helps students estimate sums.
To use Estimation Contraption, estimate the sum of the column of numbers
and input the answer in the field below the column. Click ‘OK’
to check if the answer is correct. Try the next question.
Estimator
Four helps students to sharpen estimation skills.
Estimator Four is designed for 2 players. Each player tries to get four
pieces of the same color connected horizontally, vertically, or diagonally.
One player uses red pieces, and the other player uses blue pieces. Begin
by choosing the ‘addition’ setting to start the game. Set
the time limit to answer the question. Set the tolerance to determine
how close your child’s answer must be to the actual answer. And
set the difficulty of the problems – easy, medium, or hard. Click
the ‘Start Game’ button. The first player clicks the ‘Ready’
button to start the clock and read the question. Input the answer in the
text field and click the ‘Answer’ button. Answering the estimation
question correctly allows your child to place a piece on the grid by clicking
on a column. If the question is answered incorrectly or the time runs
out, the correct answer pops up in a separate window. The game continues
with a different question for the opponent.
To start a new game, click the ‘New Game’ button. To see
how many questions each player has answered correctly, click the ‘Show
Score’ button.
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