Friday, March 6, 2026

Mathematics textbook author gives the human hand one finger too many

How many fingers on the human hand? Authors of a mathematics textbook appear to be confused.

A new textbook issued by the Secretariat of Public Education (SEP) for second-grade primary school students features an unusual image that could cause confusion in counting exercises: a human hand with an extra finger.

The department has acknowledged the error, attributing it to a misprint, but not before social media users went to town to mock the mistake.

“The new education model now considers that the new generation [of students] will evolve and mutate until they have six fingers,” teacher Fátima Loaiza Baltazar wrote on Facebook.

“It’s inclusive of people with six fingers on their hands,” one person commented, a thought echoed by another who wrote that “people with extra fingers have been made to feel invisible until now.”

In a statement that recognized the mistake in the image, the SEP also said that “there is no conceptual or didactic error” in the activity it accompanies, an exercise whose aim is to make students think about different ways to make measurements by using objects — or body parts — that are part of their everyday lives.

“These types of marginal errors . . . tend to show up, according to the editorial industry, in the order of four to five times in a copy of any kind of book and in almost every language,” the statement said.

The newspaper Milenio pointed out that on the very next page, there is a spelling mistake.

The SEP said the hand illustration error has now been corrected in the electronic version of the textbook, adding that teachers, students and parents can download and print it if they wish.

In the meantime, the new class of second-grade students across the country will do well to count on their own hands to ensure they come up with the answer they are looking for.

Source: El Universal (sp), Milenio (sp)

Have something to say? Paid Subscribers get all access to make & read comments.
Mexican peso 500-peso bills and a chart

Peso continues to slide amid Iran war risks, nearing 18 to the dollar

0
The Mexican peso continued to lose value against the dollar as Trump continued to threaten Iran and unemployment rose in the U.S.
Rendering of Zocal's before March 8, 2026

Mexico City’s Zócalo will glow in purple Sunday for International Women’s Day

0
The capital's decorative support for the Women's Day march and rally shows how far the event has come, but protective measures have still been installed around the government palace.
"Los mineros están en luto," reads a banner carried by a group protesting miners marching down a road

2 more Vizsla Silver miners identified as 3 remain missing in Sinaloa

0
Mexican authorities confirmed the identification of two bodies recovered in El Verde, more than a month after 10 employees of a Canadian mining company were kidnapped from their homes in Sinaloa.
BETA Version - Powered by Perplexity