Use this printable hidden picture for a Mecha Engineering search-and-find activity for children ages 10–12. Find 10 hidden objects, including foam arch block, curved arch former and cross-section card. Difficulty: hard (L3). Includes Color / Line art / Answer key. Use Line art for coloring. Check your finds with the Answer key. Browser printing can also save as PDF. Scene: A Masonry Mecha Aligns the First Arch Block.
In a bright architectural model classroom, a tabletop mecha holds one foam arch block against a curved support form. A teacher indicates its position while holding a controller; a student views a section card beyond the barrier.
3-page print layout: 1. Color · 2. Line art · 3. Answer key. Choose Print, then your printer or Save as PDF. Choose page 2 to print just the line art. Free for personal and classroom use. No sign-up needed.
In a bright architectural model classroom, a tabletop mecha holds one foam arch block against a curved support form. A teacher indicates its position while holding a controller; a student views a section card beyond the barrier. A materials bench holds a plumb bob, ruler, scraper and model-block box.
Targets: foam arch block, curved arch former, cross-section card, wooden plumb bob, short masonry ruler, soft mortar spreader, alignment wedge, model block box, dust sleeve, wide cleaning cup. The names below the artwork follow the icon order from left to right, top row first.
Make it your own
Search on your own, compare discoveries with a partner, or color the line art after finding the objects. Keep the Answer key separate until you are ready to check.
Read the 10 object names together before searching. Say each word, look at its shape, and then find the matching object in the scene.
Object words and observation prompts for this puzzle
Word
Meaning or search cue
Say it
foam arch block
Find the object named foam arch block. Compare its outline and small details with the matching shape in the scene.
Say foam arch block aloud. Can you describe its shape without pointing to it?
curved arch former
Find the object named curved arch former. Compare its outline and small details with the matching shape in the scene.
Say curved arch former aloud. Can you describe its shape without pointing to it?
cross-section card
Find the object named cross-section card. Compare its outline and small details with the matching shape in the scene.
Say cross-section card aloud. Can you describe its shape without pointing to it?
wooden plumb bob
Find the object named wooden plumb bob. Compare its outline and small details with the matching shape in the scene.
Say wooden plumb bob aloud. Can you describe its shape without pointing to it?
short masonry ruler
Find the object named short masonry ruler. Compare its outline and small details with the matching shape in the scene.
Say short masonry ruler aloud. Can you describe its shape without pointing to it?
soft mortar spreader
Find the object named soft mortar spreader. Compare its outline and small details with the matching shape in the scene.
Say soft mortar spreader aloud. Can you describe its shape without pointing to it?
alignment wedge
Find the object named alignment wedge. Compare its outline and small details with the matching shape in the scene.
Say alignment wedge aloud. Can you describe its shape without pointing to it?
model block box
Find the object named model block box. Compare its outline and small details with the matching shape in the scene.
Say model block box aloud. Can you describe its shape without pointing to it?
dust sleeve
Find the object named dust sleeve. Compare its outline and small details with the matching shape in the scene.
Say dust sleeve aloud. Can you describe its shape without pointing to it?
wide cleaning cup
Find the object named wide cleaning cup. Compare its outline and small details with the matching shape in the scene.
Say wide cleaning cup aloud. Can you describe its shape without pointing to it?
Write a short list of the object names, or describe one find while a partner guesses the word. Then return to the picture and look for the next object. See the how-to-play guide for more ways to use the pages.
Printing tips for this puzzle
What is in the three pages?
Page 1 is Color for a picture search, page 2 is Line art for finding and coloring, and page 3 is the Answer key. Switching the preview above does not change this three-page print layout.
Paper size and fit
The print layout uses Letter paper (8.5 × 11 inches) with space around the artwork. For A4, choose Fit to page and check the print preview so every border stays visible. Turn off browser headers and footers to avoid extra dates and URLs.
Print only the page you need
Choose page 2 in the print dialog to print just the Line art. Use it as a coloring sheet or an ink-friendly search page. Choose page 1 for Color, or page 3 for a separate Answer key.
Keep the answer separate
Leave the Answer key on screen until you finish, or print page 3 separately. For a group activity, use individual search pages so everyone can mark their own discoveries at their own pace.
Save a copy from your browser
After the three images finish loading, choose Print and select your printer or Save as PDF. Check the selected page numbers before saving. Personal, family and your own classroom or group use follow the site terms.
Questions about this puzzle
How many objects are hidden in this puzzle?
There are 10 objects to find: foam arch block, curved arch former, cross-section card, wooden plumb bob, short masonry ruler, soft mortar spreader, alignment wedge, model block box, dust sleeve, wide cleaning cup. Use the separate Answer key when you are ready to check their locations.
What age is this puzzle for?
The suggested age is 10–12 years. Ages and difficulty are guides: choose a version that feels comfortable, and work together if helpful.
Can I print only the line art page?
Yes. Choose page 2 in the three-page print dialog. Line art can be used on its own for finding and coloring. Page 1 is Color and page 3 is the Answer key.
Do I need an account to print?
No sign-up is needed to print this free set. Open Print / Save as PDF, wait for the three pages to load, and choose your printer or Save as PDF.
Can I use this in a classroom or co-op?
Free puzzles and purchased sets can be printed for personal use, your family, or your own classroom or group under the site terms. Reselling, repackaging or uploading the files to another public website is not included.
Read the usage terms for classroom and group permissions, or contact us if something on this page needs attention.
