Teacher explains math lesson on integers to attentive students in a classroom with a whiteboard.

Content black teacher explaining new material to diverse schoolchildren

Smiling boy with backpack in classroom, ready for math class.

Smiling black schoolboy near white board in classroom

Teen boy in striped shirt writing on a blackboard with chalk, focused on solving math equations.

Hand writing complex math equations on a blackboard in a classroom setting.

Hand using smartphone calculator on architectural blueprints. Modern technology in engineering.

Close-up of a curling stone with a red handle on an ice rink, scoreboard in the background.

Close-up of an architect's hand using a calculator on technical drawings with a polka dot shirt.

Red and blue digital timer display reading 00:30 on a dark background.

Bowling shoes and a red ball on a wooden lane, ready for action.

Folded jeans neatly stacked on shelves in a retail store, showcasing various styles and sizes.

Black Friday sale sign with a clock showing urgency on a black background.

Cute child wearing football uniform and helmet, playing indoors against yellow background.

Child dressed in American football uniform with helmet on a vibrant yellow backdrop, conveying dreams of sports and aspiration.

A smiling young boy wearing a blue football jersey and helmet against a yellow background.

Hands using calculator and notebook, planning finances, with cash and laptop on wooden table.

Top view of dominoes scattered on an orange background with empty space for text.

Hand using a calculator and counting hundred dollar bills on a wooden table, concept of personal finance management.

Close-up of a laptop keyboard with percentage symbol, representing financial analysis and investment concepts.

Strictly private parking sign displaying number 56, ABC, and residents only notice

Close-up of 'Kalky's 5' boat with vibrant yellow reflecting in the water.

Bright mural art on a door in Madeira, Portugal, showcasing vibrant musical inspiration.

A male teacher explains mathematical concepts on a whiteboard in a classroom setting.

Celebrate the New Year 2021 with a golden crumpled foil backdrop, elegant and festive.

Smiling schoolgirl in uniform standing by a yellow school bus in urban setting.