Grade 1 measurement worksheet asking students to order the lengths of nine objects from shortest to longest.

Problem Description:

The task is to order the lengths of 9 objects from shortest to longest. The instructions specify that you should write "1" under the shortest object and "3" under the longest object for each set of three objects.

Solution Approach:

1. Identify the Objects in Each Set: There are three sets of objects, each containing three items.
2. Compare the Lengths of Objects in Each Set:
- For each set, visually estimate the length of each object.
- Determine which object is the shortest and which is the longest.
- Assign "1" to the shortest object and "3" to the longest object.
- The remaining object will automatically be assigned "2".
3. Repeat for All Sets: Perform this process for all three sets.

Step-by-Step Analysis:

#### Set 1:
- Objects: Sock, Blackboard, Laptop
- Comparison:
- The sock is clearly the shortest.
- The blackboard is the longest.
- The laptop is in between.
- Assignments:
- Sock: 1 (shortest)
- Laptop: 2
- Blackboard: 3 (longest)

#### Set 2:
- Objects: Football, Thermometer, Envelope
- Comparison:
- The envelope is the shortest.
- The football is the longest.
- The thermometer is in between.
- Assignments:
- Envelope: 1 (shortest)
- Thermometer: 2
- Football: 3 (longest)

#### Set 3:
- Objects: Stove, Spoon, Pan
- Comparison:
- The spoon is the shortest.
- The stove is the longest.
- The pan is in between.
- Assignments:
- Spoon: 1 (shortest)
- Pan: 2
- Stove: 3 (longest)

Final Answer:

Based on the analysis above, the completed worksheet would look like this:

| 1) Sock | 2) Blackboard | 3) Laptop |
|---------|---------------|-----------|
| 1 | 3 | 2 |

| 4) Football | 5) Thermometer | 6) Envelope |
|-------------|-----------------|-------------|
| 3 | 2 | 1 |

| 7) Stove | 8) Spoon | 9) Pan |
|----------|----------|--------|
| 3 | 1 | 2 |

Boxed Final Answer:

\[
\boxed{
\begin{array}{ccc}
1 & 3 & 2 \\
3 & 2 & 1 \\
3 & 1 & 2 \\
\end{array}
}
\]